Mufaddal Saifuddin is the spiritual leader and 53rd Da'i al-Mutlaq of two million Dawoodi Bohras, a subgroup of the Tayyibi, Mustaali, Ismaili Shia branch of Islam. He is the second son of the 52nd Da'i al-Mutlaq, Mohammed Burhanuddin, whom he succeeded in 2014. Saifuddin led the restoration of medieval Fatimid architecture, notably Al-Anwar Mosque, Al-Aqmar Mosque, Al-Juyushi Mosque, and Lulua Mosque in Cairo.