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Proto-Indo-Iranian religion means the religion of the Indo-Iranian peoples prior to the earliest Hindu and Zoroastrian scriptures. These share a common inheritance of concepts including the universal force *rta (Sanskrit rta, Avestan asha), the sacred plant and drink *sauma (Sanskrit Soma, Avestan Haoma) and gods of social order such as *mitra (Sanskrit Mitra, Avestan and Old Persian Mithra, Miϑra) and *bhaga (Sanskrit Bhaga, Avestan and Old Persian Baga). Proto-Indo-Iranian religion is an archaic offshoot of Indo-European religion.
Indo-Iranian languages include three subgroups: first Indo-Aryan languages (including the Dardic languages); second Iranian languages (east and west) and third Nuristani languages. From these various and dispersed cultures, a set of common ideas may be reconstructed from which a common, unattested proto-Indo-Iranian source may be deduced.
Beliefs developed in different ways as cultures separated and evolved. For example, the cosmo-mythology of the peoples that remained on the Central Asian steppes and the Iranian plateau is to a great degree unlike that of the Indians, focused more on groups of deities (*daiva and *asura) and less on the divinities individually. Indians were less conservative than Iranians in their treatment of their divinities, so that some deities were conflated with others or, conversely, aspects of a single divinity developed into divinities in their own right. By the time of Zoroaster, Iranian culture had also been subject to the upheavals of the Iranian Heroic Age (late Iranian Bronze Age, 1800–800 BCE), an influence that the Indians were not subject to.
Sometimes certain myths developed in altogether different ways. The Rig-Vedic Sarasvati is linguistically and functionally cognate with Avestan *Haraxvaitī Ārəduuī Sūrā Anāhitā. In the Rig-Veda (6,61,5–7) she battles a serpent called Vritra, who has hoarded all of the Earth's water. In contrast, in early portions of the Avesta, Iranian *Harahvati is the world-river that flows down from the mythical central Mount Hara. But *Harahvati does no battle — she is blocked by an obstacle (Avestan for obstacle: vərəϑra) placed there by Angra Mainyu.
Cognate terms concepts
The following is a list of cognate terms concepts that may be gleaned from comparative linguistic analysis of the Rigveda and Avesta. Both collections are from the period after the proposed date of separation (ca. 2nd millennium BCE) of the Proto-Indo-Iranians into their respective Indic Iranian branches.
|Indo-Iranian||Vedic term||Avestan term||Common meaning|
|*ap||āp||āp||"water," āpas "the Waters"|
|Apam Napat, Apām Napāt||Apām Napāt||the "water's offspring"|
|*aryaman||aryaman||airyaman||"Arya-hood" (lit:** "member of Arya community")|
|*rta||rta||asha/arta||"active truth", extending to "order" & "righteousness"|
|*azi||ahi||azhi, (aži)||"dragon, snake", "serpent"|
|*daiva||daiva, deva||daeva, (daēuua)||a class of divinities|
|*mi-tra-||mitra||mithra, miϑra||"oath, covenant"|
|*asura||asura||ahura||another class of spirits|
|*sara-svnt-ih||Sarasvatī||Haraxvaitī (Ārəduuī Sūrā Anāhitā)||a controversial (generally considered mythological) river, a river goddess|
|*sau-ma-||sauma, soma||haoma||a plant, deified|
|*sva(h)r-||svar||hvar, xvar||the Sun, also cognate to Greek helios, Latin sol, Engl. Sun|
|*vr-tra-||Vrtra-||verethra, vərəϑra (cf. Verethragna, Vərəϑraγna)||"obstacle"|
|*yama||Yama||Yima||son of the solar deity Vivasvant/Vīuuahuuant|
|*yaj-na-||yajña||yasna, object: yazata||"worship, sacrifice, oblation"|
Relationship to Proto-Indo-European religion
When Vedic texts were the oldest surviving evidence of early Indo-European-speaking peoples, it was assumed that these texts preserved aspects of Proto-Indo-European culture with particular accuracy. Many ethnologists hoped to unify Indo-Iranian, Celtic, Norse, Greek, Germanic and Roman into a Proto-Indo-European religion. Max Müller believed that Indo-Iranian religion began as sun worship. G. Dumézil stressed the tripartite social system of Indo-European religion and society. Later scholarship has moved away from considering all these religions near-identical.
- Religion and culture in ancient Iran
- Historical Vedic religion
- Indian religions
- Iranian religions
- Persian mythology
- Ætsæg Din
- Fire in ancient Iranian culture