In the reign of al-Nasir Faraj, Barqūq's son and successor, al-'Ayni was appointed to the "lucrative and prestigious" post of nāzir al-ahbas (overseer of pious endowments.) He would be dismissed from and reappointed to this post several times, finally securing it for good in the reign of Sultan Mu'ayyad Shaykh and keeping it until he was ninety-one.
Al-'Ayni, the son of Barqūq, was appointed as the "overseer of pious endowments" (nāzir al-ahbas) by al-Nasir Faraj. He held this position multiple times before finally securing it permanently under Sultan Mu'ayyad Shaykh and remaining in that role until he reached the age of ninety-one.