Quran 8:57

فَإِمَّا تَثۡقَفَنَّہُمۡ فِى ٱلۡحَرۡبِ فَشَرِّدۡ بِهِم مَّنۡ خَلۡفَهُمۡ لَعَلَّهُمۡ يَذَّڪَّرُونَ ٥٧

Therefore, if you encounter them in war, you shall set them up as a deterrent example for those who come after them, that they may take heed.