Zaynab bint ÿÃÂmir ibn ÿUwaymir ibn ÿAbd Shams ibn ÿAttÃÂb al-FarÃÂsëyya al-KinÃÂnëyya, known by her kunya "Umm Rà «mÃÂn" () was among the followers or companions of Muhammad. As the wife of Abu Bakr and mother of Aisha, she was the mother-in-law of the Prophet of Islam.
Zaynab was the daughter of Amir ibn Uwaymir, a member of the Al-Harith ibn Ghanam clan of the Kinana tribe. She married twice. First, she became the second wife of al-ḤÃÂrith ibn Sakhbarah of the Azd tribe. Zaynab and al-ḤÃÂrith had a son together, Tufayl ibn al-Harith.
The family migrated to Mecca, where al-Harith became an ally of Abu Bakr. Soon afterwards, Al-Harith died, leaving Tufayl and his widowed mother completely dependent on Abu Bakr. Abu Bakr then married Umm Ruman around 601 CE. They had two children together: ÿAbd al-RaḥmÃÂn and Aisha.
Umm Ruman emigrated to Medina in 622, accompanied by her daughter Aisha and also by her stepchildren Asma and Abd Allah (children of Abu Bakr by other wives).
Ibn Sa'd states that Umm Ruman died in Medina in April/May 628. However, Ibn Hajar al-Asqalani places her death in 630.