Zayn al-Abidin

Muhammad ibn Ali (56 or 57–114 AH), called al-Baqir, was a son of Zayn al-Abidin and a grandson of both al-Hasan and al-Husayn. He taught hadith and law in Medina and is the fifth Imam of the Twelver Shi'a.

Ali ibn al-Husayn (c. 658–712), called Zayn al-Abidin, was the only son of al-Husayn to survive Karbala. He lived in Medina as a transmitter of hadith and is remembered for his worship and secret charity.