Surah Ali'Imran, Verse 135

وَٱلَّذِينَ إِذَا فَعَلُواْ فَٰحِشَةً أَوۡ ظَلَمُوٓاْ أَنفُسَهُمۡ ذَكَرُواْ ٱللَّهَ فَٱسۡتَغۡفَرُواْ لِذُنُوبِهِمۡ وَمَن يَغۡفِرُ ٱلذُّنُوبَ إِلَّا ٱللَّهُ وَلَمۡ يُصِرُّواْ عَلَىٰ مَا فَعَلُواْ وَهُمۡ يَعۡلَمُونَ١٣٥

wa-alladhīna idhā faʿalū fāḥishatan aw ẓalamū anfusahum dhakarū l-laha fa-is'taghfarū lidhunūbihim waman yaghfiru l-dhunūba illā l-lahu walam yuṣirrū ʿalā mā faʿalū wahum yaʿlamūna

And those who, when they commit an immorality or wrong themselves [by transgression], remember Allāh and seek forgiveness for their sins - and who can forgive sins except Allāh? - and [who] do not persist in what they have done while they know.