High Quality Content by WIKIPEDIA articles! Amr ibn al- s was an Arab military commander who is most noted for leading the Muslim conquest of Egypt in 640. A contemporary of Muhammad, and one of the Sahaba, who rose quickly through the Muslim hierarchy following his conversion to Islam in the year 8 AH. He founded the Egyptian capital of Fustat, and built the Mosque of Amr ibn al-As at its center the first mosque on the continent of Africa