Quran 42:37 from Surah Ash-Shura on Divine Marvels.
وَٱلَّذِينَ يَجۡتَنِبُونَ كَبَٰٓئِرَ ٱلۡإِثۡمِ وَٱلۡفَوَٰحِشَ وَإِذَا مَا غَضِبُواْ هُمۡ يَغۡفِرُونَ
English translation: And those who avoid (the) greater sins and the immoralities and when and when they are angry they forgive
Transliteration: wa-alladhina yajtanibuna kabaira al-ith'mi wal-fawahisha wa-idha ma ghadibu hum yaghfiruna