Umm Hakim bint Abd al-Muttalib explained

Umm Ḥakīm Al-Bayḍāʾ bint ʿAbd al-Muṭṭalib 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.^{[1] [2]} She was the twin sister of Abdullah, the father of Muhammad.^[3] Umm Hakim was known as Al-Bayḍāʾ ("the White One") because she was Abd al-Muttalib's only fair-skinned daughter.

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.

Umm Hakim died before 610.

Notes and References

1. Ibn Hisham note 97.
2. Muhammad ibn Saad, Tabaqat vol. 8. Translated by Bewley, A. (1995). The Women of Madina. London: Ta-Ha Publishers.
3. Al-Tabari, Tarikh al-Rusul wa'l-Muluk vol. 39. Translated by Landau-Tasseron, E. (1998). Biographies of the Prophet's Companions and Their Successors. New York: State University of New York Press.