章 6 Al-An'am (The Cattle), 节 131

1. ذَٰلِكَ أَنْ لَمْ يَكُنْ رَبُّكَ مُهْلِكَ الْقُرَىٰ بِظُلْمٍ وَأَهْلُهَا غَافِلُونَ

   That is because your Lord would not destroy the cities for wrongdoing while their people were unaware.

   6:131

Translation: Saheeh International