Hadithcore
Sahih Muslim, 2825
sahih

Sahl b. Sa'd as-Sa'idi reported:

I was in the company of Allah's Messenger (ﷺ) that he gave a description of Paradise and then Allah's Messenger (ﷺ) concluded with these words: There would be bounties which the eye has not seen and the ear has not heard and no human heart has ever perceived them. He then recited this verse:" They forsake (their) beds, calling upon their Lord in fear and in hope, and spend out of what We have given them. So no soul knows what refreshment of the eyes is hidden for them: a reward for what they did" (xxxii. 16-17)

حَدَّثَنَا هَارُونُ بْنُ مَعْرُوفٍ، وَهَارُونُ بْنُ سَعِيدٍ الأَيْلِيُّ، قَالاَ حَدَّثَنَا ابْنُ وَهْبٍ، حَدَّثَنِي أَبُو صَخْرٍ، أَنَّ أَبَا حَازِمٍ، حَدَّثَهُ قَالَ سَمِعْتُ سَهْلَ بْنَ سَعْدٍ السَّاعِدِيَّ، يَقُولُ شَهِدْتُ مِنْ رَسُولِ اللَّهِ صلى الله عليه وسلم مَجْلِسًا وَصَفَ فِيهِ الْجَنَّةَ حَتَّى انْتَهَى ثُمَّ قَالَ صلى الله عليه وسلم فِي آخِرِ حَدِيثِهِ ‏

‏ فِيهَا مَا لاَ عَيْنٌ رَأَتْ وَلاَ أُذُنٌ سَمِعَتْ وَلاَ خَطَرَ عَلَى قَلْبِ بَشَرٍ ‏

‏ ‏.‏ ثُمَّ اقْتَرَأَ هَذِهِ الآيَةَ ‏{‏ تَتَجَافَى جُنُوبُهُمْ عَنِ الْمَضَاجِعِ يَدْعُونَ رَبَّهُمْ خَوْفًا وَطَمَعًا وَمِمَّا رَزَقْنَاهُمْ يُنْفِقُونَ * فَلاَ تَعْلَمُ نَفْسٌ مَا أُخْفِيَ لَهُمْ مِنْ قُرَّةِ أَعْيُنٍ جَزَاءً بِمَا كَانُوا يَعْمَلُونَ‏}‏ ‏.‏

References2 variants
In-Book Reference
Book 53, Hadith 6
USC-MSA web (English) reference
Book 40, Hadith 6783 (deprecated numbering scheme)