Lineage
The name of Hazrat Uthman’s (ra) mother was Arwa bint Kuraiz. The name of the maternal grandmother of Hazrat Uthman (ra) was Umm Hakim Baida bint Abdil Muttalib, who was the sister of Hazrat Abdullah, the father of the Holy Prophet (sa).
According to one narration, the father of the Holy Prophet (sa), Hazrat Abdullah and the maternal grandmother of Hazrat Uthman, Umm Hakim Baida bint Abdil Muttalib, were twins. The mother of Hazrat Uthman (ra), Arwa bint Kuraiz, accepted Islam following the Treaty of Hudaibiyyah.
She then migrated from Mecca to Medina and stayed there until she passed away during the caliphate of her son, Hazrat Uthman (ra). The father of Hazrat Uthman (ra) passed away during the Jahiliyyah [age of ignorance before the advent of Islam].
(Ibn Hajar al-Asqalani, Al-Isabah fi Tamyiz al-Sahabah, Vol. 4, Uthman (ra) bin Affan [Beirut, Lebanon: Dar al-Kutub al-Ilmiyyah, 2004], p. 377) (Ali Muhammad al-Salabi, Sirat Amir al-Momineen Uthman (ra) bin Affan Shakhsiyyatuhu wa Asruh, Ch. 1 [Beirut, Lebanon: Dar al-Ma‘rifah, 2006] p. 15) (Sheikh Shah Moinuddin Ahmad Nadvi, Siyar al-Sahabah, Vol. 1 [Karachi, Pakistan: Dar al-Isha‘ah, 2004], p. 154) (Ibn Saad, Al-Tabaqat al-Kubra, Vol. 8 [Beirut, Lebanon: Dar al-Kutub al-Ilmiyyah, 1990], pp. 182, 183)