Quran 6:123 Al-An'am, ayah 123 of 165

وَكَذَٰلِكَ جَعَلْنَا فِى كُلِّ قَرْيَةٍ أَكَـٰبِرَ مُجْرِمِيهَا لِيَمْكُرُوا۟ فِيهَا ۖ وَمَا يَمْكُرُونَ إِلَّا بِأَنفُسِهِمْ وَمَا يَشْعُرُونَ ۝١٢٣

6:123 And thus have We made in every city great ones of its wicked ones, that they should plot therein. They do but plot against themselves, though they perceive not.