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.
Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
quran:16:31 –

Gardens of perpetual residence, which they will enter, beneath which rivers flow. They will have therein whatever they wish. Thus does Allah reward the righteous -  

Gardens of Eden, as a ˹place of˺ residence (jannātu ‘Adnin is a subject, the predicate of which is ˹what follows˺) which they will enter, ˹Gardens˺ underneath which rivers flow, wherein they shall have whatever they wish. So, ˹with such˺ a reward, God rewards the God-fearing,
القرآن:١٦:٣١ –

جَنَّاتُ عَدْنٍ يَدْخُلُونَهَا تَجْرِي مِنْ تَحْتِهَا الْأَنْهَارُ ۖ لَهُمْ فِيهَا مَا يَشَاءُونَ ۚ كَذَٰلِكَ يَجْزِي اللَّهُ الْمُتَّقِينَ  

{جنات عدن} إقامة مبتدأ خبره {يدخلونها تجري من تحتها الأنهار لهم فيها ما يشاءُون كذلك} الجزاء {يجزي الله المتقين}.

See similar narrations below:

Collected by Qurʾān
quran:20:76 –

Gardens of perpetual residence beneath which rivers flow, wherein they abide eternally. And that is the reward of one who purifies himself.  

the Gardens of Eden, that is to say, as a ˹place of˺ residence (this ˹jannātu ‘Adnin, ‘Gardens of Eden’˺ is an explication thereof ˹of al-darajātu’l-‘ulā, ‘the highest degrees’˺) underneath which rivers flow, abiding therein, and that is the reward of him who keeps pure, of sins.
القرآن:٢٠:٧٦ –

جَنَّاتُ عَدْنٍ تَجْرِي مِنْ تَحْتِهَا الْأَنْهَارُ خَالِدِينَ فِيهَا ۚ وَذَٰلِكَ جَزَاءُ مَنْ تَزَكَّىٰ  

{جنات عدن} أي إقامة بيان له {تجري من تحتها الأنهار خالدين فيها وذلك جزاءُ من تزكى} تَطهَّر من الذنوب.