(An-Naml) 27 : 48
وَكَانَ فِي الْمَدِينَةِ تِسْعَةُ رَهْطٍ يُفْسِدُونَ فِي الْأَرْضِ وَلَا يُصْلِحُونَ
And there were nine tribes in the city who cause mischief in the land and were not reforming.
See explanation 6: 123 and 26: 141-158.