AL AN'AAM — Ayat 53

وَكَذَلِكَ فَتَنَّا بَعْضَهُم بِبَعْضٍ لِّيَقُولواْ أَهَـؤُلاء مَنَّ اللّهُ عَلَيْهِم مِّن بَيْنِنَا أَلَيْسَ اللّهُ بِأَعْلَمَ بِالشَّاكِرِينَ

And thus We have tried some of them through others that the disbelievers might say, "Is it these whom Allah has favored among us?" Is not Allah most knowing of those who are grateful?