An-Naml 27:40
قَالَ الَّذِي عِندَهُ عِلْمٌ مِّنَ الْكِتَابِ أَنَا آتِيكَ بِهِ قَبْلَ أَن يَرْتَدَّ إِلَيْكَ طَرْفُكَ ۚ فَلَمَّا رَآهُ مُسْتَقِرًّا عِندَهُ قَالَ هَٰذَا مِن فَضْلِ رَبِّي لِيَبْلُوَنِي أَأَشْكُرُ أَمْ أَكْفُرُ ۖ وَمَن شَكَرَ فَإِنَّمَا يَشْكُرُ لِنَفْسِهِ ۖ وَمَن كَفَرَ فَإِنَّ رَبِّي غَنِيٌّ كَرِيمٌ ٤٠
Qala allathee AAindahu AAilmun mina alkitabi ana ateeka bihi qabla an yartadda ilayka tarfuka falamma raahu mustaqirran AAindahu qala hatha min fadli rabbee liyabluwanee aashkuru am akfuru waman shakara fainnama yashkuru linafsihi waman kafara fainna rabbee ghaniyyun kareemun
and I am trusty.’ Said he who possessed knowledge of the Book, ’I will bring it to thee, before ever thy glance returns to thee.’ Then, when he saw it settled before him, he said, ’This is of my Lord’s bounty that He may try me, whether I am thankful or ungrateful. Whosoever gives thanks gives thanks only for his own soul’s good, and whosoever is ungrateful -- my Lord is surely All-sufficient, All-generous.’ (27:40)