Ibn Muqla

Abu Ali Muhammad ibn Ali ibn Muqla, commonly known as Ibn Muqla, was an official of the Abbasid Caliphate who rose to high state posts in the early 10th century. His career culminated in his own assumption of the vizierate at Baghdad thrice: in 928–930, 932–933 and 934–936. Unable to successfully challenge the growing power of regional emirs, he lost his position to the first amir al-umara, Ibn Ra'iq, and died in prison. He was also a noted calligrapher, inventing al-khatt al-mansūb and khatt ath-thuluth.