 According to some sources, the mosque is the 4th holiest in Islam, other sources rank other sites as 4th.A Fatimid-era minbar is kept at the Mosque.According to an Arabic inscription written on the mimbar Fatimid vizier Badr al-Jamali had built this mimbar during the period of 18th Fatimid Imam al-Mustansir when he discovered the head of Husayn ibn Ali in 448 (A.H) at Ashkelon and, kept it in Mosque there.