Zayd ibn ʿAlī (زيد بن علي; 695–740), also spelled Zaid, was the son of Ali ibn al-Husayn Zayn al-Abidin, and great-grandson of Ali ibn Abi Talib. He led an unsuccessful revolt against the Umayyad Caliphate, in which he died. The event gave rise to the Zaydiyya sect of Shia Islam, which holds him as the next Imam after his father Ali ibn al-Husayn Zayn al-Abidin. Zayd ibn Ali is also seen as a major religious figure by many Sunnis and was supported by the prominent Sunni jurist, Abu Hanifa, who issued a fatwa in support of Zayd against the Umayyads. To Twelver and Isma'ili Shias however, his elder half-brother Muhammad al-Baqir is seen as the next Imam of the Shias. Nevertheless, he is considered an important revolutionary figure by Shias and a martyr (shaheed) by all schools of Islam, Sunnis and Shias. The calling for revenge for his death, and for the brutal display of his body, contributed to the Abbasid Revolution. Zayd was a learned religious scholar. Various works are ascribed to him, including Musnad al-Imam Zayd (published by E. Grifinni as Corpus Iuris di Zaid b. ʿAlī, also known as Majmuʿ al-Fiqh), possibly the earliest known work of Islamic law. However, the attribution is disputed; these likely represent early Kufan legal tradition. Zayd was born in Medina in 695 CE. He was the son of Ali ibn al-Husayn Zayn al-Abidin. Ibn Qutaybah in his book "al-Ma'ārif", republished in 1934 in Egypt, writes (at page 73) that one of the wives of the 4th Shia Imam was from Sindh (present-day Pakistan) and that she was the mother of Zayd ibn Ali. A similar claim has also been made in the book "Zayd Shaheed" by Abd al-Razzaq al-Hasani, published in Najaf. Zayd's mother Jodha was known by Muslim chroniclers as Jayda al-Sindiyya. Zayd was a revered member of the Bayt (Household) of Muhammad. Scholars, Saints, Sufis and Imams alike, all spoke of him in respectful terms. When the ascetic Umayyad Caliph Umar ibn Abd al-Aziz was the Governor of Madinah during the reign of Al-Walid and Suleiman, he was an associate of Zayd ibn Ali.