Fatimah bint Hizam al-Qilabiyya (died 64 A.H. (683/684) or 69 A.H. (688/689)), commonly known as Umm ul-Banin ("mother of several sons"), was from the tribe of Banu Kalb.
The grave of Umm ul-Banin
She married Ali ibn Abi Talib after the death of his first wife Fatimah, daughter of the Islamic prophet, Muhammad. Umm ul-Banin and Ali had four sons, of whom the eldest was Abbas ibn Ali, the commander of Husayn ibn Ali's forces at the Battle of Karbala. Shimr ibn Dhi 'l-Jawshan, who later killed Husayn ibn Ali at the battle, was from the same tribe as Umm ul-Banin, and he offered safe-conduct to her and her sons before the battle commenced; however, they rejected it since the offer did not include Husayn. All of Umm ul-Banin's sons were killed at Karbala.