In around 948 Marzuban, angered by an insult his envoy had received from the Buyid amir of Jibal, Rukn al-Dawla, decided to take the city of Ray as punishment.

Rukn al-Dawla managed to delay Marzuban's campaign through diplomatic means, giving him time to gather reinforcements from his brothers.

[3] The Dailamite officers who had managed to escape from the battle at Qazvin decided to rally around Marzuban's father Muhammad, who was still in prison.

Wahsudan imprisoned him and sent Daisam to Azerbaijan,[4] in the hopes that he could aid the sons of Marzuban against an army sent by Rukn al-Dawla and led by Abu Mansur Muhammad.

This momentary weakness in the central administration allowed the Rawadids and Shaddadids to take control of the areas to the northeast of Tabriz and Dvin, respectively.

Unable to establish his rule in the province, Wahsudan returned to Tarum; Justan was recognized as ruler in Azerbaijan, with his brother Ibrahim I ibn Marzuban I made governor of Dvin.

Justan seems to have been interested primarily in his harem, a fact which alienated some of his supporters, although he and Ibrahim successfully put down a revolt by a grandson of the caliph al-Muktafi in 960.

Shortly afterwards Justan and another brother, Nasir, came to Tarum, where they were treacherously imprisoned by Wahsudan, who sent his son Isma'il to take over Azerbaijan.

Ibrahim raised an army in Armenia to oppose Isma'il, prompting Wahsudan to execute Justan, his mother and Nasir.