﴿ وَحَرَٰمٌ عَلَىٰ قَرْيَةٍ أَهْلَكْنَٰهَآ أَنَّهُمْ لَا يَرْجِعُونَ ﴾

“Hence, it has been unfailingly true of any community whom We have ever destroyed that they [were people who] would never turn back [from their sinful ways]”

It is forbidden for any town meaning it is forbidden for its people which We have destroyed that they should lā yarji‘ūna the lā is extra return that is their return to this world is prohibited.