﴿ 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!”

They did not prevent one another that is one would not forbid the other from committing again any indecency that they committed; verily evil was what they used to do verily evil was this deed of theirs.