Fussilat 41:34

وَلَا تَسْتَوِى ٱلْحَسَنَةُ وَلَا ٱلسَّيِّئَةُ ۚ ٱدْفَعْ بِٱلَّتِى هِىَ أَحْسَنُ فَإِذَا ٱلَّذِى بَيْنَكَ وَبَيْنَهُۥ عَدَٰوَةٌ كَأَنَّهُۥ وَلِىٌّ حَمِيمٌ

Walā tastawī l-ḥasanatu walā l-sayi-atu id'faʿ bi-allatī hiya aḥsanu fa-idhā alladhī baynaka wabaynahu ʿadāwatun ka-annahu waliyyun ḥamīmun

And not equal are the good deed and the bad. Repel [evil] by that [deed] which is better; and thereupon, the one whom between you and him is enmity [will become] as though he was a devoted friend.