Surah Al-An'am, Verse 123

وَكَذَٰلِكَ جَعَلۡنَا فِي كُلِّ قَرۡيَةٍ أَكَٰبِرَ مُجۡرِمِيهَا لِيَمۡكُرُواْ فِيهَاۖ وَمَا يَمۡكُرُونَ إِلَّا بِأَنفُسِهِمۡ وَمَا يَشۡعُرُونَ١٢٣

wakadhālika jaʿalnā fī kulli qaryatin akābira muj'rimīhā liyamkurū fīhā wamā yamkurūna illā bi-anfusihim wamā yashʿurūna

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.