 In some versions, Isa was appointed by Sultan Qutuz as a reward for his support in the Battle of Ain Jalut against the Mongols in the latter half of 1260, though the sources indicate that Isa and his Bedouin horsemen refrained from actually participating in the battle.In another version, Qutuz's successor Baybars appointed Isa as a reward for assisting him during his 1250s exile in Syria (in this version, Ali was stripped of the title as punishment for denying Baybars refuge).In any case, it is known that Baybars issued a diploma confirming Isa as "amir al-ʿarab" and recognizing his "iqtaʿat" (fiefs) in 1260/61.