Ilyasa b. Muhammad quickly angered the neighboring Buyids under 'Adud al-Daula by arguing over some territory on the border of Kerman and Fars. Before invading Kerman, 'Adud made sure to win over members of Ilyasa's army.
Ilyasa fled to Bukhara, where the Samanids welcomed him, but he aroused their hostility by complaining that they would not help him retake Kerman. He was expelled from Bukhara to Khwarazm, while the governor of Khurasan seized the possessions of Ilyasa's that he had left in Kuhistan.