Surah Al-An'am 6:123

وَكَذَٰلِكَ جَعَلْنَا فِى كُلِّ قَرْيَةٍ أَكَـٰبِرَ مُجْرِمِيهَا لِيَمْكُرُوا۟ فِيهَا ۖ وَمَا يَمْكُرُونَ إِلَّا بِأَنفُسِهِمْ وَمَا يَشْعُرُونَ

And thus We have placed within every city the greatest of its criminals to conspire therein. But they conspire not except against themselves, and they perceive [it] not.

Translation: Saheeh International

Tafsir

And thus in the same way that We have made the wicked folk of Mecca its leaders We have made in every city its sinners great ones that they may plot therein to impede the faith; but they plot only against themselves because the evil consequences thereof will befall them though they do not perceive this.

Excerpt from Tafsir al-Jalalayn, commentary on 6:123, via Quran.com. The reader has the full commentary and 9 more tafsirs.