Surah Al-Baqara Verse 279 - English Translation by Ali Unal
Surah Al-Baqaraفَإِن لَّمۡ تَفۡعَلُواْ فَأۡذَنُواْ بِحَرۡبٖ مِّنَ ٱللَّهِ وَرَسُولِهِۦۖ وَإِن تُبۡتُمۡ فَلَكُمۡ رُءُوسُ أَمۡوَٰلِكُمۡ لَا تَظۡلِمُونَ وَلَا تُظۡلَمُونَ
If you do not (and you persist in taking interest, whether regarding it as lawful or not) be warned of war from God and His Messenger. If you sincerely repent (and give up all interest transactions completely), you will have your principal. Then you will neither be doing wrong nor being wronged