Quran 16:119 from Surah An-Nahl on Divine Marvels.
ثُمَّ إِنَّ رَبَّكَ لِلَّذِينَ عَمِلُواْ ٱلسُّوٓءَ بِجَهَٰلَةٖ ثُمَّ تَابُواْ مِنۢ بَعۡدِ ذَٰلِكَ وَأَصۡلَحُوٓاْ إِنَّ رَبَّكَ مِنۢ بَعۡدِهَا لَغَفُورٞ رَّحِيمٌ
English translation: Then indeed your Lord to those who did evil in ignorance then repented after after that and corrected themselves indeed your Lord after that after that (is) surely Oft-Forgiving Most Merciful
Transliteration: thumma inna rabbaka lilladhina amilu al-sua bijahalatin thumma tabu min ba'di dhalika wa-aslahu inna rabbaka min ba'diha laghafurun rahimun