Tāyyib’īyyah/Tāyyibī fiqh or Mustā‘līyyah/Mustā‘lī fiqh is a fiqh system associted with the Mustā‘lī branch of Ismailism that split with the Fatimid supporting Hafizi branch by believing Taiyab abi al-Qasim was the rightful Imam. They are the surviving branch of the Mustaali and have split into Dawoodi Bohra, Sulaimani Bohra, and Alavi Bohra.
Upon the death of the 20th Imam Al-Amir(d. AH 526 (1131/1132)), his two year old Child Tayyib (b. AH 524 (1129/1130)) was appointed 21st Imam. As he was not in position to run the dawah, Queen Arwa al-Sulayhi was authorized by Imam Al-Amir to run the matter. The Dai-ul-Mutlaq had now been given absolute authority and made independent from political activity. Because of the Fatimid, the dawat was able to survive even after the fall of the Sulehid Dynasty.[clarification needed]
Da'i Zoeb bin Moosa
Dai Zoeb bin Moosa used to live in and died in Haus, Yemen. His mazoon was Syedna Khattab bin Hasan. After death of Moulai Abadullah, Zoeb bin Moosa appointed Maulai Yaqoob as the wali ("representative" or "caretaker") of the Fatimid Dawat in India. Moulai Yaqoob was the first person of Indian origin to receive this honour. He was son of Moulai Bharmal, minister of Rajput King Siddhraja Jaya Singha. They all along with minister Moulai Tarmal had honoured Fatimid Dawat along with their fellow citizens on the call of Moulai Abdullah. Moulai Fakhruddin son of Moulai Tarmal was sent to western Rajasthan, India. One Dai after another were continued till 24th Dai Yusuf Najmuddin ibn Sulaiman in Yemen. Due to prosecution by local ruler the Dawat then shifted to India under 25th Dai Jalal bin Hasan.
In 1592 AD, the Taiyabi broke into two factions in a dispute over who should become the 27th Dai: Dawūd Burhanu d-Dīn Qutb Shāh or Sulayman bin Hassan. The followers of the former, primarily in India, became the Dawoodi, the latter the Sulaymani of Yemen.
At present the largest Taiyabi-descended faction, the Dawoodi Bohra Dawah is "de facto" headed by the 53rd Dai Mufaddal Saifuddin who has been appointed after the death of the 52nd Dai Mohammed Burhanuddin. The Sulaimani Bohra are headed by their 52nd Dai, al-Fakhrī ‘Abdullāh ibn Muhammad al-Makrami. The Qutbi Bohra are headed Khuzaima Qutbuddin.
- The Ismaili, their history and doctrine by Farhad Daftary
- Religion,learning and science by Young Lathan
- Medieval Islamic civilisation by Joseph w. Meri, Bacharach
- Sayyida Hurra: The Isma‘ili Sulayhid Queen of Yemenby Dr Farhad Daftary
- The Uyun al-akhbar is the most complete text written by an Ismaili/Tayyibi/Dawoodi 19th Dai Sayyedna Idris bin Hasan on the history of the Ismaili community from its origins up to the 12th century CE. period of the Fatimid caliphs al-Mustansir (d. 487 AH / 1094 AD), the time of Musta‘lian rulers including al-Musta‘li (d. 495 AH / 1102 AD) and al-Amir (d. 526 AH / 1132 AD), and then the Tayyibi Ismaili community in Yemen.