Banu Bakr
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The Banu Bakr (Arabic:بنو بكر) were an Arabian tribe.
During Muhammad's lifetime, they were allies of the Quraish of Mecca.
In 630, their attack against Banu Khuza'a, who had recently become allies of Muhammad, violated the Treaty of Hudaybiyya of 628, which led to the conquest of Mecca by the Muslim armies, which occurred without battle.