Abū Muḥammad ʿIzz al-Dīn ʿAbd al-ʿAzīz bin ʿAbd al-Salām bin Abī al-Qāsim bin Ḥasan al-Sulamī al-Shāfiʿī (Arabic: أبو محمد عز الدين عبد العزيز بن عبد السلام بن أبي القاسم بن حسن السُّلَمي الشافعي; 577 AH - 660 AH / 1262 CE), also known by his titles, Sultan al-'Ulama/ Sulthanul Ulama, Abu Muhammad al-Sulami, was a famous mujtahid, Ash'ari theologian, jurist and the leading Shafi'i authority of his generation.
[1][5][6] He was described by Al-Dhahabi as someone who attained the rank of ijtihad, with asceticism and piety and the command of virtue and forbidding of what is evil and solidity in religion.
When al-Salih Ismail, Emir of Damascus, made capitulatory concessions to Theobald I of Navarre during the Barons' Crusade, ibn 'Abd al-Salam condemned him from the pulpit and omitted mentioning him in the post-sermon prayer.
[2][9] Having left Damascus, Ibn 'Abd al-Salam settled in Cairo where he was appointed chief judge and Imam of the Friday prayer, gaining such public influence that he could (and did) command the right and forbid the wrong with the force of the law.
[2][9] Ibn 'Abd al-Salam later resigned from the judiciary and undertook a career as a teacher of Shafi'i law at the Salihiyya, a college founded in the heart of Cairo by al-Malik al-Salih which had then barely been completed and which was, in Egypt, the first establishment providing instruction in the four rites.