Surah Al-Baqarah · Ayah 216

كُتِبَ عَلَيْكُمُ ٱلْقِتَالُ وَهُوَ كُرْهٌۭ لَّكُمْ ۖ وَعَسَىٰٓ أَن تَكْرَهُوا۟ شَيْـًۭٔا وَهُوَ خَيْرٌۭ لَّكُمْ ۖ وَعَسَىٰٓ أَن تُحِبُّوا۟ شَيْـًۭٔا وَهُوَ شَرٌّۭ لَّكُمْ ۗ وَٱللَّهُ يَعْلَمُ وَأَنتُمْ لَا تَعْلَمُونَ

Kutiba alaikumulqitaalu wa huwa kurhullakum wa 'asaaa an takrahoo shai'anw wa huwa khairullakum wa 'asaaa an tuhibbo shai'anw wa huwa sharrullakum; wallaahu ya'lamu wa antum laa ta'lamoon

Fighting has been enjoined upon you while it is hateful to you. But perhaps you hate a thing and it is good for you; and perhaps you love a thing and it is bad for you. And Allah Knows, while you know not.