The courtyard of this mosque centers on a domed ablutions fountain, this fountain is surrounded by the four iwans. Ablution is part of the cleaning ritual before can say his/her prayer. Each of the four iwans represents one school of Sunni Islam, consisting of Shafii, Maliki, Hanafi and Hanbali.
To the right of the minbar in this room is a bronze door, exquisitely decorated with radiating stars in gold and silver, which leads into the mausoleum of Sultan Hassan. The mehrab of the mosque is decorated with soft-hued marble inlay and a band of Kufic script. This mosque is huge in size and it measures 150m in length and covering an area of 7,906 sq m. Its walls rise to 36m and its tallest minaret to 68m.