Isa besieged Muhammad in the provincial capital, Bardha'a, but despite receiving aid from Ashot Bagratuni (the future King of Armenia), after 13 months of fruitless siege he was forced to abandon it. Isa then departed Armenia altogether, returning to Amid in the Diyar Bakr. Although regarded by the Armenian and Arab historians as nominal governor of Armenia until his death in 882/3, he never again left the Jazira.[1][11]