Sallamah Umm Abdallah (Arabic: سلمة أم عبد الله) was the main ancestor of the Abbasid dynasty. She was the wife of Muhammad al-Imam, and the mother of Abdallah, who became the second Abbasid caliph as al-Mansur.

Sallamah was the wife of Muhammad ibn Ali. She was from the Maghreb. She married Muhammad in 713/714. She was the Ancestor of Abbasids. She was related to All Abbasid caliphs, except Al-Saffah who was her step son. It is a dispute whether she was Muhammad's legal wife or just a concubine, however According to Al-Suyuti's History of the Caliphs, Al-Mansur lived 95 AH – 158 AH (714 AD – 6 October 775 AD).^[1] Abdallah was born at the home of the Abbasid family in Humeima (modern-day Jordan) after their emigration from the Hejaz in 714 (95 AH).^[2] Al-Mansur's mother is reported to be a Berber slave.^[3] Sallamah was possibly captured during Conquest of the Maghreb by Umayyads and was later brought by Muhammad.

Her Husband, Muhammad ibn Ali ibn Abdallah^[4] was the son of Ali ibn Abd Allah ibn al-Abbas and great-grandson of al-‘Abbas ibn ‘Abd al-Muttalib, the uncle of the Islamic prophet, Muhammad. He was born in Humeima in Jordan,^[5] he was the father of the two first 'Abbâsid caliphs, As-Saffah and Al-Mansur, and as such was the progenitor of the Abbasid dynasty.^[6][7][8] Sallamah died in 740s shortly after her husband died.

• Banu Hashim