Ala al-Din Muhammad III

ʿAlāʾ ad-Dīn Muḥammad III, more commonly known simply as Ala ad-Din (علاءالدین), son of Jalāl al-Dīn Ḥassan III, was the 26th Nizāri Ismāʿilī Imām. He ruled from 1221 to 1255. He was an esteemed scholar and the spiritual and worldly leader of the Nizari Ismailis, He authored a constitution for the Nizari Ismaili which was practiced for very long time. The intellectual life of Persia flourished significantly during his reign of 34 years. His vision of tolerance, inclusion and pluralism was a rare and shining example for that time. His reign witnessed the beginnings of the Mongol devastations of Persia and the eastern Muslim world. He was murdered under suspicious circumstances and was succeeded by his eldest son Rukn al-Din Khurshah in 1255.