Hadithcore
Riyad as-Salihin, 1892

Abu Sa'id and Abu Hurairah (May Allah be pleased with them) reported:

The Messenger of Allah (ﷺ) said, "When the dwellers of Jannah enter Jannah, an announcer will call: (You have a promise from Allah that) you will live therein and you will never die; you will stay healthy therein and you will never fall ill; you will stay young and you will never become old; you will be under a constant bliss and you will never feel miserable." <b>[Muslim]</b>.

وعن أبي سعيد وأبي هريرة رضي الله عنهما أن رسول الله صلى الله عليه وسلم قال‏:‏ “إذا دخل أهل الجنة - الجنة- ينادي مناد‏:‏ إن لكم أن تحيوا، فلا تموتوا أبداً، وإن لكم أن تصحوا، فلا تسقموا أبداً، وإن لكم أن تشبوا فلا تهرموا أبداً، وإن لكم أن تنعموا، فلا تبأسوا أبداً‏"‏ ‏(‏‏(‏رواه مسلم‏)‏‏)‏‏.‏

References1 variant
In-Book Reference
Book 19, Hadith 24
Sharh · explanationclick to expand
<b>Guidance from the Hadith:</b><br> 1) The dwellers of Paradise will be in renewable bliss that they will not be subject to any change due to any illness, old age, death, or a disaster.<br> 2) One should patiently endure the afflictions of this world, which is naturally marked by trouble and annoyance.