Al-An'am 6:53

وَكَذَٰلِكَ فَتَنَّا بَعْضَهُم بِبَعْضٍۢ لِّيَقُولُوٓا۟ أَهَٰٓؤُلَآءِ مَنَّ ٱللَّهُ عَلَيْهِم مِّنۢ بَيْنِنَآ ۗ أَلَيْسَ ٱللَّهُ بِأَعْلَمَ بِٱلشَّٰكِرِينَ

Thus did We try some of them by comparison with others, that they should say: "Is it these then that Allah hath favoured from amongst us?" Doth not Allah know best those who are grateful?