29:3
وَلَقَدۡ فَتَنَّا ٱلَّذِینَ مِن قَبۡلِهِمۡۖ فَلَیَعۡلَمَنَّ ٱللَّهُ ٱلَّذِینَ صَدَقُوا۟ وَلَیَعۡلَمَنَّ ٱلۡكَـٰذِبِینَ
Lo! We tested those who were before you. Thus Allah knoweth those who are sincere, and knoweth those who feign.
— Mohammed Marmaduke William Pickthall
Wa laqad fatannal lazeena min qablihim fala ya'lamannal laahul lazeena sadaqoo wa la ya'lamannal kaazibeen