3:166
وَمَاۤ أَصَـٰبَكُمۡ یَوۡمَ ٱلۡتَقَى ٱلۡجَمۡعَانِ فَبِإِذۡنِ ٱللَّهِ وَلِیَعۡلَمَ ٱلۡمُؤۡمِنِینَ
That which befell you, on the day when the two armies met, was by permission of Allah; that He might know the true believers;
— Mohammed Marmaduke William Pickthall
Wa maa asaabakum yawmal taqal jam'aani fabiiznil laahi wa liya'lamal mu'mineen