The Expedition of Bir Maona (also spelt Ma'una), according to Islamic tradition, took place four months after the Battle of Uhud in the year A.H. 4 of the Islamic calendar. It is believed the Islamic prophet Muhammad sent missionaries to preach Islam, at the request of Abu Bara. Forty (as per Ibn Ishaq) or seventy (as per Sahih Bukhari) of the Muslim missionaries sent by Muhammed were killed.