شيخ الإسلام
Ebussuud was the son of Iskilipli Sheikh Muhiddin Muhammad Efendi. In the 1530s, Ebussuud served as judge in Bursa, Istanbul and Rumelia, where he brought local laws into conformity with Islamic divine law ("sharia"). Sultan Suleiman the Magnificent promoted him to Shaykh al-Islām – supreme judge and highest official – in 1545, an office Ebussuud held until his death and which he brought to the peak of its power. He worked closely with the Sultan, issuing judicial opinions that legitimised Suleiman's killings of Yazidis and his successor Selim's attack on Cyprus. Ebussuud also issued "fatwās" which labeled the Qizilbash, regardless of whether they lived on Iranian or Ottoman soil, as "heretics", and declared that killing them would be viewed as praiseworthy, other than just being allowed according to law.