 Although ‘Amr was the leader of the rebellion in name, Muhammad b. Hurmuz had no intention of handing power over to him once the Samanids had been driven out of Sistan.He declared himself amir, inserting his name in the Friday prayer and minting his own coins.He was soon opposed, however, by the pro-Saffarid party, led by an Ibn al-Haffar, who took over the Ya'qubi palace and proclaimed ‘Amr as amir on May 2, 912.