3:166
وَمَآ أَصَٰبَكُمْ يَوْمَ ٱلْتَقَى ٱلْجَمْعَانِ فَبِإِذْنِ ٱللَّهِ وَلِيَعْلَمَ ٱلْمُؤْمِنِينَ
Wa maa asaabakum yawmal taqal jam'aani fabiiznil laahi wa liya'lamal mu'mineen
What befell you on the day when the two hosts met was by the leave of Allah, and in order that He might mark out those who believe
