Brethren of Purity

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Arabic manuscript illumination from the 12th century CE showing the Brethren of Purity.

The Brethren of Purity (Arabic: أخوان‌ الصفا‎‎ ikhwãn al-safã; also The Brethren of Sincerity) were a secret society[1] of Muslim philosophers in Basra, Iraq,[2] in the 8th or 10th century CE.

The structure of this mysterious organization and the identities of its members have never been clear.[3][4] Their esoteric teachings and philosophy are expounded in an epistolary style in the Encyclopedia of the Brethren of Purity (Rasa'il Ikhwan al-safa'), a giant compendium of 52 epistles that would greatly influence later encyclopedias. A good deal of Muslim and Western scholarship has been spent on just pinning down the identities of the Brethren and the century in which they were active.


The Arabic phrase Ikhwān aṣ-Ṣafāʾ (short for, among many possible transcriptions, Ikhwān aṣ-Ṣafāʾ wa Khullān al-Wafā wa Ahl al-Ḥamd wa abnāʾ al-Majd,[5] meaning "Brethren of Purity, Loyal Friends, People worthy of praise and Sons of Glory") can be translated as either the "Brethren of Purity" or the "Brethren of Sincerity"; various scholars such as Ian Netton prefer "of Purity" because of the group's ascetic impulses towards purity and salvation.

A suggestion made by Ignác Goldziher, and later written about by Philip Khuri Hitti in his History of the Arabs, is that the name is taken from a story in Kalilah waDimnah, in which a group of animals, by acting as faithful friends (ikhwan al-safa), escape the snares of the hunter. The story concerns a Barbary dove and its companions who get entangled in the net of a hunter seeking birds. Together, they leave themselves and the ensnaring net to a nearby rat, who is gracious enough to gnaw the birds free of the net; impressed by the rat's altruistic deed, a crow becomes the rat's friend. Soon a tortoise and gazelle also join the company of animals. After some time, the gazelle is trapped by another net; with the aid of the others and the good rat, the gazelle is soon freed, but the tortoise fails to leave swiftly enough and is himself captured by the hunter. In the final turn of events, the gazelle repays the tortoise by serving as a decoy and distracting the hunter while the rat and the others free the tortoise. After this, the animals are designated as the "Ikwhan al-Safa".

This story is mentioned as an exemplum when the Brethren speak of mutual aid in one risala (epistle), a crucial part of their system of ethics that has been summarized thus:

In this Brotherhood, self is forgotten; all act by the help of each, all rely upon each for succour and advice, and if a Brother sees it will be good for another that he should sacrifice his life for him, he willingly gives it.[6]


The Brethren regularly met on a fixed schedule. The meetings apparently took place on three evenings of each month: once near the beginning, in which speeches were given, another towards the middle, apparently concerning astronomy and astrology, and the third between the end of the month and the 25th of that month; during the third one, they recited hymns with philosophical content.[7] During their meetings and possibly also during the three feasts they held, on the dates of the sun's entry into the Zodiac signs "Ram, Cancer, and Balance" (which double as the Vernal Equinox, Summer Solstice, and Autumnal Equinox), beyond the usual lectures and discussions, they would engage in some manner of liturgy reminiscent of the Harranians.[8]


Hierarchy was a major theme in their Encyclopedia, and unsurprisingly, the Brethren loosely divided themselves up into four ranks by age; the age guidelines would not have been firm, as for example, such an exemplar of the fourth rank as Jesus would have been too young if the age guidelines were absolute and fixed. Compare the similar division of the Encyclopedia into four sections and the Jabirite symbolism of 4. The ranks were:

  1. The "Craftsmen" – a craftsman had to be at least 15 years of age; their honorific was the "pious and compassionate" (al-abrār wa 'l-ruhamā).
  2. The "Political Leaders" – a political leader had to be at least 30 years of age; their honorific was the "good and excellent" (al-akhyār wa 'l-fudalā)
  3. The "Kings" – a king had to be at least 40 years of age; their honorific was the "excellent and noble" (al-fudalā' al-kirām)
  4. The "Prophets and Philosophers" – the most aspired-to, the final and highest rank of the Brethren; to become a Prophet or Philosopher a man had to be at least 50 years old; their honorific compared them to historical luminaries such as Jesus, Socrates, or Muhammad who were also classified as Kings; this rank was the "angelic rank" (al-martabat al-malakiyya).[9]


There have been a number of theories as to the authors of the Brethren. Though some members of the Ikhwan are known, it is not easy to work out exactly who, or how many, were part of this group of writers. The members referred to themselves as "sleepers in the cave" (Rasail 4th, p. 18); a hidden intellectual presence. In one passage they give as their reason for hiding their secrets from the people, not as fear of earthly violence, but as desire to protect their God-given gifts from the world (Rasail 4th, p. 166). Yet they were well aware that their esoteric teachings might provoke unrest, and the various calamities suffered by the successors of the Prophet may have seemed good reason to remain hidden.

Ismaili theories on the Brethren[edit]

Among the Isma'ili groups and missionaries who favored the Encyclopedia, authorship was sometimes ascribed to one or another "Hidden Imam"; this theory is recounted in al-Qifti's biographical compendium of philosophers and doctors, the "Chronicle of the Learned" (Ahkbār al-Hukamā or Tabaqāt-al-Hukamā).[10][11][12]

Some modern scholars have argued for an Ismaili origin to the writings. Ian Richard Netton writes in "Muslim Neoplatonists" (London, 1982, p. 80) that: "The Ikhwan's concepts of exegesis of both Quran and Islamic tradition were tinged with the esoterism of the Ismailis." Whilst according to Yves Marquet, "It seems indisputable that the Epistles represent the state of Ismaili doctrine at the time of their compositions" (vide, "Encyclopaedia of Islam", 1960, p. 1071) Bernard Lewis in "The Origins of Ismailism" (London, 1940, p. 44) was more cautious than Fyzee, ranking the Epistles among books which, though "closely related to Ismailism" may not actually have been Ismaili, despite their batini inspiration. Ibn Qifti (d.646/1248), reporting in the 7th/13th century in "Tarikh-i Hukama" (p. 82) that, "Opinions differed about the authors of the Epistles. Some people attributed to an Alid Imam, proffering various names, whereas other put forward as author some early Mutazalite theologians."[citation needed]

Among the Syrian Ismailis, the earliest reference of the Epistles and its relation with the Ismailis is given in "Kitab Fusul wa'l Akhbar" by Nurudin bin Ahmad (d. 233/849). Another important work, "al-Usul wa'l-Ahakam" by Abul Ma'ali Hatim bin Imran bin Zuhra (d. 498/1104), writes that, "These dais, and other dais with them, collaborated in composing long Epistles, fifty-two in number, on various branches of learning."[13] It implies the Epistles being the product of the joint efforts of the Ismaili dais.[citation needed]

Among the Yamenite traces, the earliest reference of the Epistles is found in "Sirat-i Ibn Hawshab" by Garar bin Mansur al-Yamen, who lived between 270/883 and 360/970, and writes, "He (Imam Taqi Muhammad) went through many a difficulty and fear and the destruction of his family, whose description cannot be lengthier, until he issued (ansa'a) the Epistles and was contacted by a man called Abu Gafir from among his dais. He charged him with the mission as was necessary and asked him to keep his identity concealed." This source not only asserts the connection of the Epistles with the Ismailis, but also indicates that the Imam himself was not the sole author (sahibor mu'allif), but only the issuer or presenter (al-munsi). It suggests that the text of the philosophical deliberations was given a final touching by the Imam, and the approved text was delivered to Abu Gafir to be forwarded possibly to the Ikhwan in Basra secretly. Since the orthodox circles and the ruling power had portrayed a wrong image of Ismailism, the names of the compilers were concealed. The prominent members of the secret association seem to be however, Abul Hasan al-Tirmizi, Abdullah bin Mubarak, Abdullah bin Hamdan, Abdullah bin Maymun, Sa'id bin Hussain etc. The other Yamenite source connecting the Epistles with the Ismailis was the writing of Sayyadna Ibrahim bin al-Hussain al-Hamidi (d. 557/1162), who wrote "Kanz ul-Walad." After him, there followed "al-Anwar ul-Latifa" by Sayyadna Muhammad bin Tahir (d. 584/1188), "Tanbih al-Ghafilin" by Sayyadna Hatim bin Ibrahim Al Hamidi (d. 596/1199), "Damigh al-Batil wa hatf ul-Munaazil" by Sayyadna Ali bin Muhammad bin al-Walid al-Anf (d. 612/1215), "Risalat al-Waheeda" by Sayyadna Hussain bin Ali al-Anf (d. 667/1268) and "Uyun'ul-Akhbar" by Sayyadna Idris bin Hasan Imaduddin (d. 872/1468) etc.[citation needed]

According to "Ikhwan as-Safa" (Rasail 21st., p. 166), "Know, that among us there are kings, princes, khalifs, sultans, chiefs, ministers, administrators, tax agents, treasurers, officers, chamberlains, notables, nobles, servants of kings and their military supporters. Among us too there are merchants, artisans, agriculturists and stock breeders. There are builders, landowners, the worthy and wealthy, gentlefolk and possessors of all many virtues. We also have persons of culture, of science, of piety and of virtue. We have orators, poets, eloquent persons, theologians, grammarians, tellers of tales and purveyors of lore, narrators of traditions, readers, scholars, jurists, judges, magistrates and ecstatics. Among us too there are philosophers, sages, geometers, astronomers, naturalists, physicians, diviners, soothsayers, casters of spells and enchantments, interpreters of dreams, alchemists, astrologers, and many other sorts, too many to mention."[citation needed]


Al-Qifti, however, denigrates this account and instead turns to a comment he discovered, written by Abū Hayyān al-Tawhīdī (d. 1023)[10] in his Kitāb al-Imtā' wa'l-Mu'ānasa (written between 983 and 985),[14] a collection of 37 séances at the court of Ibn Sa'dān, vizier of the Buyid ruler Samsam al-Dawla. Apparently, al-Tawhīdī was close to Zaid ibn Rifa'a, praising his intellect, ability and deep knowledge – indeed, he had dedicated his Kitāb as-Sadiq wa 'l-Sadaqa to Zaid – but he was disappointed that Zaid was not orthodox or consistent in his beliefs, and that he was, as Stern puts it:

...frequenting the society of the heretical authors of the Rasa'il Ikhwan as-Safa, whose names are also recorded as follows: Abu Sulaiman Muhammed b. Ma'shar al-Bisti al-Maqdisi, Abu'l-Hasan 'Ali b. Harun az-Zanjani and Abu Ahmad al-Mihrajani, and al-'Aufi. At-Tauhidi also reports in this connection the opinion expressed by Abu Sulaiman al-Mantiqi, his master, on the Rasa'il and an argument between a certain al-Hariri, another pupil of al-Mantiqi, and Abu Sulaiman al-Maqdisi about the respective roles of Revelation and Philosophy.[15]

For many years, this was the only account of the authors' identities, but al-Tawhīdī's comments were second-hand evidence and so unsatisfactory; further, the account is incomplete, as Abu Hayyan mentions that there were others besides these 4.[16]

This situation lasted until al-Tawhīdī's Kitāb al-Imtā' wa'l-Mu'ānasa was published in 1942.[15] This publication substantially supported al-Qifti's work, although al-Qifti apparently toned down the description and prominence of al-Tawhīdī's charges that the Brethren were Batiniyya, an esoteric Ismaili sect and thus heretics, possibly so as to not tar his friend Zaid with the same brush.

Stern derives a further result from the published text of the Kitāb al-Imtā wa 'l-Mu'anasa, pointing out that a story al-Tawhīdī ascribes to a personal meeting with Qadi Abu'l-Hasan 'Alī b. Hārūn az-Zanjāni, the founder of the group, appears in almost identical form in one of the epistles.[17] While neat, Stern's view of things has been challenged by Tibawi, who points out some assumptions and errors Stern has made, such as the relationship between the story in al-Tawhīdī's work and the Epistles; Tibawi points out the possibility that the story was instead taken from a third, independent and prior source.[18]

Al-Tawhīdī's testimony has also been described as thus:

The Ikhwan al-Safa' remain an anonymous group of scholars, but when Abu Hayyan al-Tawhīdī was asked about them, he identified some of them: Abu Sulayman al-Busti (known as al-Muqaddasi), 'Ali b. Harun al-Zanjani, Muhammad al-Nahrajuri (or al-Mihrajani), al-'Awfi, and Zayd ibn Rifa'i.[19]

The last contemporary source comes from the surviving portions of the Kitāb Siwan al-Hikma (c. 950) by Abu Sulaiman al-Mantiqi (al-Tawhīdī's teacher; 912-985),[20] which was a sort of compendium of biographies; al-Mantiqi is primarily interested in the Brethren's literary techniques of using parables and stories, and so he says only this little before proceeding to give some extracts of the Encyclopedia:

Abū Sulaimān al-Maqdisī: He is the author of the fifty-two Epistles inscribed The Epistles of the Sincere Brethren; all of them are full with Ethics and the science of... They are current among people, and are widely read. I wish to quote here a few paragraphs in order to give an idea of the manner of their parables, thus bringing my book to an end.[21]

al-Maqdisī was previously listed in the Basra group of al-Tawhīdī; here Stern and Hamdani differ, with Stern quoting Mantiqi as crediting Maqdisi with 52 epistles, but Hamdani says "By the time of al-Manṭiqī, the Rasā'īl were almost complete (he mentions 51 tracts)."[22]

The second near-contemporary record is another comment by Shahrazūrī as recorded in the Tawārikh al-Hukamā or alternatively, the Tawárykh al-Hokamá; specifically, it is from the Nuzhat al-arwah, which is contained in the Tawārikh, which states:

Abū Solaymán Mah. b. Mosh'ir b. Nasby, who is known by the name of Moqadisy, and Abú al-Hasan b. Zahrún Ryhány, and Abú Ahmad Nahrajúry, and al-'Aufy, and Zayd b. Rofá'ah are the philosophers who compiled the memoirs of the Ikhwán al-cafâ, which have been recorded by Moqaddisy.[23]

Hamdani disputes the general abovegoing identifications, pointing out that accounts differ in multiple details, such as whether Zayd was an author or not, whether there was a principal author, and who was in the group or not. He lays particular stress on quotes from the Encyclopedia dating between 954 and 960 in the anonymous (Pseudo-Majriti) work Ghāyat al-Hakīm; al-Maqdisi and al-Zanjani are known to have been active in 983, He finds it implausible they would have written or edited "so large an encyclopedia at least twenty-five to thirty years earlier, that is, around 343/954 to 348/960, when they would have been very young."[22] He explains the al-Tawhidi narrative as being motivated by contemporary politics and issues of hereticism relating to the Qarmatians, and points out that there is proof that Abu Hayyan has fabricated other messages and information.[24]

Amusingly, Aloys Sprenger mentions this in a footnote:

Since I wrote the first part of this notice I found one of the authors of these memoirs mentioned in the following terms: 'Zayd b. Rofa, one of the authors of the Ikhwan al safa, was extremely ignorant in tradition, and he was a liar without shame.'"[25]

The Epistles of the Brethren of Purity[edit]

The Rasa’il Ikhwan al-Safa’ (Epistles of the Brethren of Purity) consist of fifty-two treatises in mathematics, natural sciences, psychology (psychical sciences) and theology. The first part, which is on mathematics, groups fourteen epistles that include treatises in arithmetic, geometry, astronomy, geography, and music, along with tracts in elementary logic, inclusive of: the Isagoge, the Categories, De Interpretatione, the Prior Analytics and the Posterior Analytics. The second part, which is on natural sciences, gathers seventeen epistles on matter and form, generation and corruption, metallurgy, meteorology, a study of the essence of nature, the classes of plants and animals, including a fable. The third part, which is on psychology, comprises ten epistles on the psychical and intellective sciences, dealing with the nature of the intellect and the intelligible, the symbolism of temporal cycles, the mystical essence of love, resurrection, causes and effects, definitions and descriptions. The fourth part deals with theology in eleven epistles, investigating the varieties of religious sects, the virtue of the companionship of the Brethren of Purity, the properties of genuine belief, the nature of the Divine Law, the species of politics, and the essence of magic.[26]

They define a perfect man in their Rasa'il as "of East Persian derivation, of Arabic faith, of Iraqi, that is Babylonian, in education, Hebrew in astuteness, a disciple of Christ in conduct, as pious as a Syrian monk, a Greek in natural sciences, an Indian in the interpretation of mysteries and, above all a Sufi or a mystic in his whole spiritual outlook". There are debates on using this description and other materials of Rasa'il that could help with determination of the identity, affiliation (with Ismaili, Sufism, ...), and other characteristics of Ikhwan al-Safa.[27]

The Rasa’il Ikhwan al-Safa’ are available in print through a variety of Arabic editions, starting from the version established in Calcutta in 1812, then followed by the edition of Bombay of 1887–1889), then by the edition of Khayr al-Din al-Zirikli in 1928 in Cairo, and the Beirut Sadir edition by Butrus Bustani in 1957 and the version set by ‘Arif Tamir in Beirut in 1995. All these editions are not critical and we do not yet have a complete English translation of the whole Rasa’il encyclopedia.

The first complete Arabic critical edition and fully annotated English translation of the Rasa’il Ikhwan al-Safa’ is being prepared for publication by a team of editors, translators and scholars as part of a book series that is published by Oxford University Press in association with the Institute of Ismaili Studies in London; a project currently coordinated by the series General Editor Nader El-Bizri.[28] [29]This series is initiated by an introductory volume of studies edited by Nader El-Bizri, which was published by Oxford University Press in 2008, and followed in 2009 by the voluminous Arabic critical edition and annotated English translation with commentaries of The Case of the Animals Versus Man Before the King of the Jinn (Epistle 22; eds. trans. L. Goodman & R. McGregor), then Epistle 5: On Music (ed. trans. O. Wright, 2010), Epistles 10-15: On Logic (ed. trans. C. Baffioni, 2010), Epistle 52a: On Magic (eds. trans. G. de Callatay & B. Halflants, 2011), Epistles 1-2: Arithmetic and Geometry (ed. trans. N. El-Bizri, 2012), the voluminous Epistles 15-21: Natural Sciences (ed. trans. C. Baffioni, 2013), Epistle 4: Geography (ed. trans. I Sanchez and J. Montogomery, 2014), Epistle 5: "On Astronomia" (ed. trans. J. F. Ragep and T. Mamura, 2015), Epistles 32-36: "Sciences of the Soul and Intellect" (ed. trans. I. Poonawala, G. de Callatay, P. Walker, D. Simonowitz, 2015).[30] This OUP series received a large number of academic reviews in journals, including three review-essays that were published in the Times Literary Supplement.


  1. ^ They are generally considered a secret society because of their closed and private meetings every 12 days, as mentioned in the Rasa'il.
  2. ^ Al-Fārūq?, I. R. (1960), "On the Ethics of the Brethren of Purity", The Muslim World, 50: 109–121.
  3. ^ "Having been hidden within the cloak of secrecy from its very inception, the Rasa'il have provided many points of contention and have been a constant source of dispute among both Muslim and Western scholars. The identification of the authors, or possibly one author, the place and time of writing and propagation of their works, the nature of the secret brotherhood, the outer manifestation of which comprises the Rasa'il – these and many secondary questions have remained without answer." pg 25, Nasr (1964)
  4. ^ William Bayne Fisher, Richard Nelson Frye, John Andrew Boyle, The Cambridge History of Iran, Published by Cambridge University Press, 1975, ISBN 0-521-20093-8, p. 428
  5. ^ إخوان الصفاء وخلان الوفا وأهل الحمد وأبناء المجد
  6. ^ pg 199, 189 of Lane-Poole 1883
  7. ^ "The liturgy of the first night consisted of personal oratory; that of the second of a 'cosmic text', read under the starry heavens facing the polar star; and that of the third night of a philosophical hymn (implying a metaphysical or metacosmic theme) which was a 'prayer of Plato', 'supplication of Idris', or 'the secret psalm of Aristotle'." pg 35 of Nasr 1964
  8. ^ "...the liturgy described by the Ikhwan seems to be more closely related to the religion of the heirs of the prophet Idris, that is, the Harranians who were the principal inheritors in the Middle East of what has been called "Oriental Pythagoreanism" and who were the guardians and propagators of Hermeticism in the Islamic world." pg 34 of Nasr 1964
  9. ^ pg 36, Neton 1991
  10. ^ a b pg 193 of Lane-Poole's Studies in a Mosque
  11. ^ pg. 25 of Nasr 1964
  12. ^ pg 1; "It can be easily understood too that the Ismā'ilis, among whom the Rasa'il enjoyed a quasi-canonical authority, ascribed to someone or other of their "Hidden Imams"." Here Stern is drawing upon Dr. H. Hamdānī's "The Rasail Ikhwan al-Safa in the Ismaili Literature", published in Der Islam in 1936. Compare also this quote from pg 7 of the "Ikhwan as-Safa and their Rasa'il: A Critical Review of a Century and a Half of Research" (by A. L. Tibawi,as published in volume 2 of The Islamic Quarterly in 1955; pgs. 28–46): "It tends, however, to prove one thing, namely, that theRasa'il were popular with later Isma'ili missionaries who read, copied, and summarized them to suit their own purpose. But, as stated above, it has yet to be proved that Isma'ili bent of the tracts and of the genuine ar-Risāla al-Jāmi'a was itself a proof of early Isma'ili connexion. Indeed, the tracts speak in two voices on this Isma'ili bent." Stern (1947)
  13. ^ quoted by Arif Tamir in "Khams Rasa'il Ismailiyya" (Salamia, 1956, p. 120)
  14. ^ pg 345, Hamdani
  15. ^ a b pg. 3, Stern 1947
  16. ^ 348, Hamdani
  17. ^ pg. 4, Stern 1947
  18. ^ pg 12-13 of "Ikhwan as-Safa and their Rasa'il: A Critical Review of a Century and a Half of Research", by A. L.Tibawi, as published in volume 2 of The Islamic Quarterly in 1955;pgs. 28–46
  19. ^
  20. ^ 349, Hamdani
  21. ^ pg. 5, Stern 1947
  22. ^ a b 350, Hamdani
  23. ^ "Notices of some copies of the Arabic work entitled "Rasàyil Ikhwàm al-cafâ" by Aloys Sprenger, originally published by the Journal of the Asiatic Society of Bengal (Calcutta) in 1848 Islamic Philosophy volume 20
  24. ^ 351, Hamdani
  25. ^ Image:Brethren8.png
  26. ^ "The Institute of Ismaili Studies - From the Manuscript Tradition to the Printed Text: The Transmission of the Rasa’il of the Ikhwan al-Safa’ in the East and West". Retrieved 2012-08-23. 
  27. ^ Seyyed Hossein Nasr, An Introduction to Islamic Cosmological Doctrines: Conceptions of Nature and Methods Used for Its Study by the Ikhwān Al-Ṣafāʼ, Al-Bīrūnī, and Ibn Sīnā, Edition: revised, Published by SUNY Press, 1993, ISBN 0-7914-1515-5. Chapter 1. (Pages 31–33)
  28. ^ "The Institute of Ismaili Studies". 2010-10-14. Archived from the original on 2012-08-25. Retrieved 2012-08-23. 
  29. ^ [1] Oxford University Press, Epistles of the Brethren of Purity series under the General Editorship of Nader El-Bizri
  30. ^ "Epistles of the Brethren of Purity. The Ikhwan al-Safa' and the - Oxford University Press". 2008-12-04. Retrieved 2014-03-04. 


  • 1998 edition of The Routledge Encyclopedia of Philosophy; ed. Edward Craig, ISBN 0-415-18709-5
  • Nasr, Seyyed Hossein (1964). An Introduction to Islamic Cosmological Doctrines: Conceptions of nature and methods used for its study by the Ihwan Al-Safa, Al-Biruni, and Ibn Sina. Belknap Press of Harvard University Press. LCCN 64-13430. 
  • Lane-Poole, Stanley (1883). Studies in a Mosque (1st ed.). Khayat Book & Publishing Company S.A.L. Retrieved 2007-04-28. 
  • Netton, Ian Richard (1991). Muslim Neoplatonists: An Introduction to the Thought of the Brethren of Purity (1st ed.). Edinburgh University Press. ISBN 0-7486-0251-8. 
  • "The authorship of the Epistles of the Ikhwan-as-Safa", by Samuel Miklos Stern, published by Islamic Culture of Hyderabad in 1947
  • "Abū Ḥayyan Al-Tawḥīdī and The Brethren of Purity", Abbas Hamdani. International Journal Middle East Studies, 9 (1978), 345–353
  • El-Bizri, Nader (2008). Epistles of the Brethren of Purity. Ikhwan al-Safa' and their Rasa'il (1st ed.). Oxford University Press. ISBN 978-0-19-955724-0. 

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