Fussilat Ayah 34

وَلَا تَسْتَوِى ٱلْحَسَنَةُ وَلَا ٱلسَّيِّئَةُ‌ۚ ٱدْفَعْ بِٱلَّتِى هِىَ أَحْسَنُ فَإِذَا ٱلَّذِى بَيْنَكَ وَبَيْنَهُۥ عَدَٲوَةٌ كَأَنَّهُۥ وَلِىٌّ حَمِيمٌ ٣٤ Good and evil cannot be equal. Respond ?to evil? with what is best, then the one you are in a feud with will be like a close friend.