Surah Al-Anbiya, ayah 95

21:95

وَحَرَٰمٌ عَلَىٰ قَرۡيَةٍ أَهۡلَكۡنَٰهَآ أَنَّهُمۡ لَا يَرۡجِعُونَ ٩٥

Waharāmun 'alā qaryatin ahlaknāhā annahum lā yarji'ūn

And it is prohibited to [the people of] a city which We have destroyed that they will [ever] return906

Footnotes

906 They cannot return to this world, nor can they repent to Allāh.