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