hisham bin suleiman bin alnasir he rose up against almahdi and his brother alhakam was older than him when he was alive at that time. he was called almasum so he defeated him and was killed the second day of his uprising.
هشام بن سليمان بن الناصر قام على المهدي، وكان أخوه الحكم أسن منه حيا يومئذ، وتسمى بالمعصموم فظفر به، وقتل ثاني يوم قيامه.