(8) بَاب فِي دَوَامِ نَعِيمِ أَهْلِ الْجَنَّةِ وَقَوْله تَعَالَى وَنُودُوا أَنْ تِلْكُمْ الْجَنَّةُ أُورِثْتُمُوهَا بِمَا كُنْتُمْ تَعْمَلُونَ
Abu Sa'id al-Khudri and Abu Huraira both reported Allah's Messenger (ﷺ) as saying:
There would be an announcer (in Paradise) who would make this announcement: Verily I there is in store for you (everlasting) health and that you should never fall ill and that you live (for ever) and do not die at all. And that you would remain young and never grow old. And that you would always live in affluent circumstances and never become destitute, as words of Allah, the Exalted and Glorious, are:" And it would be announced to them: This is the Paradise. You have been made to inherit it for what you used to do". (VII; 43)
Reference: Sahih Muslim 2837
In-book reference: Book 53, Hadith 26
USC-MSA web (English) reference(deprecated numbering scheme): Book 40, Hadith 6803