لِّئَلَّا يَعْلَمَ أَهْلُ الْكِتَابِ أَلَّا يَقْدِرُونَ عَلَىٰ شَيْءٍ مِّن فَضْلِ اللَّهِ ۙ وَأَنَّ الْفَضْلَ بِيَدِ اللَّهِ يُؤْتِيهِ مَن يَشَاءُ ۚ وَاللَّهُ ذُو الْفَضْلِ الْعَظِيمِ (29)
(57:29) (You should do this) so that the People of the Book know that they have no control over Allah's Bounty, and that all bounty is in Allah's Hand; He bestows it on whomsoever He pleases. Allah is the Lord of abounding bounty.