Usama ibn Zayd

Usama ibn Zayd was a Companion (sahabi, a contemporary follower) of the Prophet Muhammad and a figure remembered with particular affection in the early community. He was the son of Zayd ibn Haritha — a freedman whom the Prophet had treated as an adopted son — and of Umm Ayman (Barakah), a freedwoman of the Prophet's household. Tradition places his birth in Mecca before the Hijra (the 622 CE migration to Medina); the exact year is not securely attested, with estimates spread across the 610s CE (roughly c. 614, and as late as c. 618 in some accounts).

He is best known because the Prophet, near the end of his life, appointed Usama — then a young man traditionally said to be about eighteen — to lead a military expedition north toward the Balqa region of Byzantine-ruled Syria, partly in response to the earlier battle of Mu'ta, in which his father had been killed. Tradition reports that some objected to so young a commander and that the Prophet defended the choice. After the Prophet's death the caliph Abu Bakr reaffirmed the appointment and dispatched the force; al-Tabari records Abu Bakr's instructions to the army.

When civil war (the First Fitna) later broke out between Ali ibn Abi Talib and Mu'awiya, traditional reports in both Sunni and Shia literature hold that Usama declined to take up arms against fellow Muslims and remained neutral, while keeping his respect for Ali; the saying attributed to him about never fighting one who professes the faith is a reported tradition whose wording varies across collections.

Later biographical tradition places him for a time near Damascus and at Wadi al-Qura before he settled near Medina, where he died. His death date is disputed: Ibn Abd al-Barr gives 54 AH (c. 674 CE), while other reports place it toward the end of Mu'awiya's caliphate (c. 58-61 AH / c. 678-680 CE).