Shirdil also claimed the succession, and from his province of Kerman invaded and captured Fars. He took the title "Sharaf al-Dawla". Sharaf al-Dawla's invasion of Fars allowed two more of Samsam al-Dawla's brothers, Taj al-Dawla and Diya' al-Dawla, to set up their own rule in Basra and Khuzestan. In Diyar Bakr, a Kurd named Badh ibn Hasanwaih took power and forced Samsam al-Dawla to confirm him as its ruler. To the north, Samsam al-Dawla's uncle Fakhr al-Dawla ruled an extensive territory from Ray. The rulers of Basra and Khuzestan soon acknowledged Fakhr al-Dawla as senior amir, making the latter the most powerful of the Buyids and moving the senior amirate from Iraq to Jibal.