Muḥammad ibn al-ʿAbbās Abū Bakr al-Khwārazmī, better simply known as Abu Bakr al-Khwarazmi was a 10th-century Iranian poet and secretary, who throughout his long career served in the court of the Hamdanids, Samanids, Saffarids and Buyids.[1] He is best known as the author of the early encyclopedia Mafātīḥ al-ʿulūm (“Key to the Sciences”) in the Arabic language.