Surah An-Nur Verse 17

يَعِظُكُمُ اللَّهُ أَنْ تَعُودُوا لِمِثْلِهِ أَبَدًا إِنْ كُنْتُمْ مُؤْمِنِينَ

Allah warns you against returning to the likes of this [conduct], ever, if you should be believers