Surah Al-Baqarah 2:216

كُتِبَ عَلَيْكُمُ ٱلْقِتَالُ وَهُوَ كُرْهٌ لَّكُمْ ۖ وَعَسَىٰٓ أَن تَكْرَهُوا۟ شَيْـًٔا وَهُوَ خَيْرٌ لَّكُمْ ۖ وَعَسَىٰٓ أَن تُحِبُّوا۟ شَيْـًٔا وَهُوَ شَرٌّ لَّكُمْ ۗ وَٱللَّهُ يَعْلَمُ وَأَنتُمْ لَا تَعْلَمُونَ

Battle 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 Allāh knows, while you know not.

Translation: Saheeh International

Tafsir

Prescribed for you obligatory for you is fighting disbelievers though it be hateful to you by nature because of the hardship involved. Yet it may happen that you hate a thing which is good for you; …

Excerpt from Tafsir al-Jalalayn, commentary on 2:216, via Quran.com. The reader has the full commentary and 9 more tafsirs.