Following the foundation of the Ottoman state, the title of Sheikh-ul-Islam (Turkish: Şeyhülislâm), formerly used in the Abbasid Caliphate, was given to a leader authorized to issue legal opinion or fatwa. His office was known as the Şeyhülislâm Kapısı, Bâb-ı Fetvâ, or Bâb-ı Meşîhat (The Sheikh's Porte). During the reign of Sultan Murad II, (1421–1444, 1446–1451) the position became an official title, with authority over other muftis in the Empire. In the late 16th century, the Shaykh al-Islam were assigned to appoint and dismiss supreme judges, high ranking college professors, and heads of Sufi orders. Prominent figures include Zenbilli Ali Cemali Efendi (1445–1526), Ibn-i Kemal (Kemalpaşazade) (1468–1533), Ebussuud Efendi (1491–1574) and al-Kawthari (1879–1952).