﴿ كَانُوا۟ لَا يَتَنَاهَوْنَ عَن مُّنكَرٍۢ فَعَلُوهُ ۚ لَبِئْسَ مَا كَانُوا۟ يَفْعَلُونَ ﴾

“They would not prevent one another from doing whatever hateful things they did: vile indeed was what they were wont to do!”

Please check ayah 5:81 for complete tafsir.