Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
quran:9:22

˹They will be˺ abiding therein forever. Indeed, Allah has with Him a great reward.  

therein they shall abide forever (khālidīna is an implied circumstance). Surely with God is a tremendous reward.
القرآن:٩:٢٢

خَالِدِينَ فِيهَا أَبَدًا ۚ إِنَّ اللَّهَ عِنْدَهُ أَجْرٌ عَظِيمٌ  

{خالدين} حال مقدرة {فيها أبدا إن الله عنده أجر عظيم}.