Background
He was the son of Baha' al-Dawla.
He was the son of Baha' al-Dawla.
When Abu'l-Fawaris' brother Sultan al-Dawla became the senior amir of the Buyids in 1012, he appointed Abu'l-Fawaris (thereafter known as Qawam al-Dawla, "Foundation of the State") as governor of Kerman. When Sultan al-Dawla left Fars for Iraq in around 1017, Qawam al-Dawla decided to attack. With the support of the Ghaznavids, he invaded and occupied Fars.
A counterattack expelled him from that province, but he managed to retain his hold on Kerman. Eventually, Qawam al-Dawla and Abu Kalijar engaged in hostilities against each other. The fighting ceased only when Qawam al-Dawla died in late 1028.
He was poisoned; Abu Kalijar took over Kerman.