He attacked Shirvan c. 917 and captured its ruler Ali I alongside his son Abbas and grandson Abu Bakr in Marzūqiya, near Derbent.
Around 932, Muflih al-Saji arrived in Shirvan, who was escaping Daysam al-Kurdi.
Fearing retribution, Abu Tahir handed him over to Balduya, possibly a general of Daysam.
[1] He intervened in Emirate of Derbent c. 944 when inhabitants expelled their ruler Ahmad b. Abd al-Malik I and appealed to Abu Tahir to take over emirate, who in turn sent his second son Ahmad to Derbent.
[2] Towards the end of his reign, Abu Tahir was allied with Emirate of Derbent and Sallarids in a campaign against Christian neighbors, probably Bagratid Armenia.