Banu Bakr
In Ramadan 8 AH (around October 629), Muhammad left for Mecca with approximately 10,000 of his "sahaba" aiming to capture the city from the Quraysh following a violation of the terms of the Treaty of Hudaybiyyah by the Banu Bakr, who were allies of the Quraysh, after they attacked the Banū Khuzaʽah, allies of the Muslims. The Treaty had called for a 10-year truce and ceasefire between the Muslims, the Quraysh and their respective allies. Muhammad arrived at Mecca a week from his departure, dividing the army into four regiments, each entering Mecca from one point of entry. The conquest was largely bloodless and the Quraysh eventually surrendered without putting up a fight.