|Ruqayya bint Muhammad
|Banu Hashim of Quraysh
|ca. 609, Utaybah ibn Abu Lahab, divorce on/aft. 613
|Aft. Mar 624, ‘Uthman ibn ‘Affan
|Companion and Family of Muhammad
Umm Kulthum was married to Utaybah ibn Abu Lahab ibn Abd al-Muttalib, in the Days of Ignorance. Her older sister Ruqayya married Utaybah’s brother Utbah. She was taken to her husband’s house at some point–likely after 610, when Muhammad’s behavior started concerning her father-in-law.
In 613, when Muhammad brought the Quraysh together and urged them all to convert, Muhammad had a vicious falling out with Abu Lahab, who repulsed him, and Abu Lahab ordered his sons to divorce the daughters of Muhammad. Ruqayya and her sister Umm Kulthum were returned without a mahr (bride-price gift) because they were still virgins, which means that they were still pre-pubescent at this point. Note that Abu Lahab’s sons had not had sex with their pre-pubescent wives.
Umm Kulthum stayed unmarried, at least partly because she likely took care of her younger sister Fatima after her mother’s death. She remained single until her sister Ruqayya died on the day of the Battle of Badr. Then she was married to her sister’s widower, ‘Uthman ibn ‘Affan. She never had a child and died before her father.