خالِدينَ فيها ما دامَتِ السَّماواتُ وَالأَرضُ إِلّا ما شاءَ رَبُّكَ ۚ إِنَّ رَبَّكَ فَعّالٌ لِما يُريدُ

They will dwell there for as long as the heavens and the earth last, unless your Lord wills differently. Your Lord accomplishes what He intends.