[2] Muhammad appointed Usama ibn Zayd as the commander of an expeditionary force which was to invade the region of Balqa in the Byzantine Empire to avenge the Muslim defeat at the Battle of Mu'tah, in which Usama's father and Muhammad's adopted son, Zayd ibn Harithah, had been killed.
Usama's mother, Umm Ayman served as a slave in the household of Muhammad's parents, Abdullah ibn Abdul-Muttalib and Aminah bint Wahb.
[5] Following Aminah's death in Al-Abwa, Barakah looked after Muhammad, and moved with him to the household of his grandfather Abdul-Muttalib ibn Hashim in Mecca, where she served him during his childhood[6] and afterwards,[7] in his adulthood.
[8] When Muhammad married Khadija, he arranged for Barakah's freedom and marriage to a Khazrajite companion named Ubayd ibn Zayd, who was her first husband.
[16][17] After the Farewell Pilgrimage, Muhammad appointed Usama ibn Zayd as the commander of an expeditionary force which was to invade the region of Balqa in the Byzantine Empire.
(Let it be known that) he is the most beloved of all people to me" Sahih al-Bukhari, 5:59:744However, soon after the expedition was dispatched,people stayed in Medina refusing to go under Usama's army and disobeyed the prophet [19] The campaign was not reengaged until leadership of the community passed to Abu Bakr, who chose to honour Muhammad's wishes and reaffirmed Usama's command.