We have tested those before them, for God must distinguish those who are truthful, and He must expose the liars.
وَلَقَد فَتَنَّا الَّذينَ مِن قَبلِهِم فَلَيَعلَمَنَّ اللَّهُ الَّذينَ صَدَقوا وَلَيَعلَمَنَّ الكٰذِبينَ
wa laqad fatannal lazeena min qablihim fala ya’lamannal laahul lazeena sadaqoo wa la ya’lamannal kaazibeen