[3] In March, the Shaddadid ruler Abu'l-Aswar Shavur I invaded his domains, captured the Quylamiyan castle, and then withdrew back to Arran.

The reason for the attack was probably the fact that Fariburs gave refuge to Anushirvan ibn Lashkari,[4] who was deposed by his great-uncle Abu'l-Aswar in 1049.

[3] In January 1064, Shavur invaded Shirvan for the fourth time, where he seized several towns, and forced Fariburz to pay him 40,000 dinars.

However, unfortunately for the rebels, Mansur was a cousin of Fariburz and had good relations with him, which made him raise an army and attack Derbent in order to avenge him, destroying many villages around the city.

This hit the people of Derbent heavily, and forced them to free Fariburz's paternal aunt Shamkuya and pay tribute.

Some time later, Mufarrij, with an army which included his own men and some Saririans, went forth to besiege the city of Shabaran, but was shortly defeated by Fariburz, who managed to capture him.

[6] In January 1067, for an unknown reason, Fariburz had some people from Shamakhi crucified, including his chamberlain (hajib) Lashkari ibn Rahman.

Meanwhile, Qara-tegin resumed his raiding in Shirvan moving from Baku to Shamakhi, destroyed many villages and towns, and kidnapped woman and children.

Meanwhile, Fariburz secretly sent a messenger to the chamberlain of the Seljuq ruler Alp Arslan, who was the overlord of Qara-tegin and the Turks who had been raiding Caucasus.

During the festival, Mamlan got drunk and after he was permitted to leave, he got ambushed and killed by three of Fariburz's men, which included his cousin Lashkarsitan (apparently, a son of Abul Aswar), his servant Shad-tekin and his chamberlain Namdar ibn Muzaffar on 24 February 1067.

Bar Hebraeus mentions that a Shirvanshah trapped an Armenian patrician named Aristakes with 200 men in 1067 and delivered him to Alp Arslan, eventually forcing them to convert to Islam.

[10] In April 1067, an unnamed son of a certain Giorgi, rebelled against Fariburz and captured the Daskarat al-Husayn castle, but after some time, ceded it to Aghsartan I, who was the ruler of Kakheti.

When Fariburz returned to Shirvan, he marched towards Quni, where he killed many of its people and ravaged the place in order to avenge Lashkarsitan.

Some time later, Fariburz found out that Guzhdaham, who still carried the tribute he had to pay Alp Arslan, had left Lakz and arrived to Derbent, where he took refuge with the chiefs of the city.

Fariburz raided Arran using the opportunity of Ashot ibn Shavur ruling as regent in name of his brother Fadl II in 1068.

Unexpectedly, Fariburz suddenly had him imprisoned, but later changed his mind due to his fear of Malik-Shah; he freed Arghar with his own hands, made a pretext and gave him gifts once again.

[15] Arghar then falsely acted that he had pardoned and fled from his court, raised an army and invaded Shirvan, where he ravaged the country, but in the end was forced by Malik-Shah to restore what he had destroyed, which he did in 1075.

Although Fariburz was during his late reign a nominal vassal of Seljuqs, he minted his coins in his own name including laqab al-Malik al-Adil Abu-Shuja and mentioning the Seljuk sultan and caliph al-Muqtadi as well.