Wa kazaalika fatannaa ba'dahum biba'dil liyaqoolooo ahaaa'ulaaa'i mannal laahu 'alaihim mim baininaa; alaisal laahu bi-a'lama bish shaakireen
And thus We have tried some of them through others that they [i.e., the disbelievers] might say, "Is it these whom Allah has favored among us?" Is not Allah most knowing of those who are grateful?
1 Mufti Taqi Usmani
Thus We have tested some of them through others, so that they should say, “Are these the ones among all of us whom Allah has chosen for His favour?” Yes, does Allah not know well who are the grateful?