Surah Al-Baqarah 2:279

فَإِن لَّمْ تَفْعَلُوا۟ فَأْذَنُوا۟ بِحَرْبٍ مِّنَ ٱللَّهِ وَرَسُولِهِۦ ۖ وَإِن تُبْتُمْ فَلَكُمْ رُءُوسُ أَمْوَٰلِكُمْ لَا تَظْلِمُونَ وَلَا تُظْلَمُونَ

And if you do not, then be informed of a war [against you] from Allāh and His Messenger. But if you repent, you may have your principal - [thus] you do no wrong, nor are you wronged.

Translation: Saheeh International

Tafsir

But if you do not do what you have been commanded then be warned have knowledge of war from God and His Messenger against you herein is a grave threat for them. When it was revealed they said ‘What power can we have in a war against Him!’ Yet if you repent and forgo it you shall have your principal sums the original …

Excerpt from Tafsir al-Jalalayn, commentary on 2:279, via Quran.com. The reader has the full commentary and 9 more tafsirs.