Umm Hakim bint Abd al-Muttalib
Umm Ḥakīm Al-Bayḍāʾ bint ʿAbd al-Muṭṭalib (Arabic: أم حكيم البيضاء بنت عبد المطلب) was an aunt of Muhammad and maternal grandmother of Uthman.
She was born in Mecca around 546, the daughter of Abd al-Muttalib and Fatima bint Amr al-Makhzumiya.: 32 She was the twin sister of Abdullah, the father of Muhammad.: 198 Umm Hakim was known as Al-Bayḍāʾ ("the White One") because she was Abd al-Muttalib's only fair-skinned daughter.: 198
She married Kurayz ibn Rabi'a from the Abd Shams clan of the Quraysh. Their children were Amir, Arwa (the mother of the future Caliph Uthman), Talha and Umm Talha.: 32 : 198
Umm Hakim died before 610.: 198