Quran 20:82 from Surah Taa-Haa on Divine Marvels.
وَإِنِّي لَغَفَّارٞ لِّمَن تَابَ وَءَامَنَ وَعَمِلَ صَٰلِحٗا ثُمَّ ٱهۡتَدَىٰ
English translation: But indeed I Am the Perpetual Forgiver of whoever repents and believes and does righteous (deeds) then remains guided
Transliteration: wa-inni laghaffarun liman taba waamana wa'amila salihan thumma ih'tada