 so that the people of the book know that they have no control over allahs bounty and that all bounty is in allahs hand he bestows it on whomsoever he pleases. allah is the lord of abounding bounty.
لئلا يعلم أهل الكتاب ألا يقدرون على شيء من فضل الله وأن الفضل بيد الله يؤتيه من يشاء والله ذو الفضل العظيم