Amru Ibn al-As, laid the foundations of his great mosque in 21 Hegira, in compliance with the Muslim policy of establishing mosques in the conquered countries. Eighty of the Prophet's companions, including Az-Zubayr Ibn Al-'Awwam, Al-Miqdad, Ibadah Ibn s-Samit and Abi-al-Darda' and others, engaged in the construction of this mosque and in defining its qiblah. Al Maqrizi describes it in his Khutat as follows: "It is 50 cubits long, 30 cubits wide. Roads are paved all around it, and it has two doors facing Amru's house, another two doors to the North, and one to the West. The ceiling is extremely low, and the Mosque has no courtyard. In the summer, people would sit around it, and only seven cubits separated it from Amru's house.