байат

(n.) recognition of allegiance; 
alliance against something ~ кардан (намудан) to recognize someone's rule; 
to swear an oath of allegiance; 
~ гирифтan to gain the right of rule; 
~ додан to give the right to rule; 
ба ҳамдигар ~ кардан (намудан), ба якдигар дасти ~ додан to make an alliance