Quran 6:131 from Surah Al-An'aam on Divine Marvels.
ذَٰلِكَ أَن لَّمۡ يَكُن رَّبُّكَ مُهۡلِكَ ٱلۡقُرَىٰ بِظُلۡمٖ وَأَهۡلُهَا غَٰفِلُونَ
English translation: That (is because) [that] not is your Lord one who destroys the cities for their wrongdoing while their people (are) unaware
Transliteration: dhalika an lam yakun rabbuka muh'lika al-qura bizul'min wa-ahluha ghafiluna