Considered a martyr among the Shi'as, Abd Allah was imprisoned on the orders of Al-Mansur after he refused to reveal the hiding place of his sons, and was assassinated three years later while in prison.
[1][2] Abd Allah was the first child of the couple and was raised by his maternal uncle Ali ibn Husayn Zayn al-Abidin,[3][4] who took charge of his education and instructed him theologically.
[5] According to the narrations of Abu al-Faraj al-Isfahani, Abd Allah had a great temper, aspired to exert control over Banu Hashim, and challenged Umar II.
Abd Allah al-Mahd's sons are famous for their roles in the revolutions of the time, among them Muhammad who rebelled against the Abbasids in Medina, which led to his death along with many of his followers.
Yahya went to Persia and resided in Daylam[18] where he attempted to recruit people for a new rebellion against the Abbasid state, but was defeated and imprisoned by order of Harun, dying of hunger, thirst or having been buried alive around 803.
Al-Mansur met him in his cell during the season of Hajj in 757, and asked him again to reveal his son's hiding place in exchange for his freedom, but he refused once more.