 abdullah bin almutazz he rose up against almuqtadir and was called almuntasef. he defeated him and killed him in a cold water tank and his father was killed in a bathhouse.
عبد الله بن المعتز قام على المقتدر وتسمى بالمنتصف، ظفر به وقتل في صهريج ماء بارد، وقتل أبوه في حمام.