وَلَا تَسْتَوِي الْحَسَنَةُ وَلَا السَّيِّئَةُ ادْفَعْ بِالَّتِي هِيَ أَحْسَنُ فَإِذَا الَّذِي بَيْنَكَ وَبَيْنَهُ عَدَاوَةٌ كَأَنَّهُ وَلِيٌّ حَمِيمٌ
But [since] good and evil cannot be equal, repel thou [evil] with something that is better and lo! he between whom and thyself was enmity [may then become] as though he had [always] been close [unto thee], a true friend!
Quran (41:34)