Hadithcore
Riyad as-Salihin, 1886

Abu Sa'id Al-Khudri (May Allah be pleased with him) said:

The Prophet (ﷺ) said, "There is a tree in Jannah that is so huge that if a rider of a swift horse has to cover its distance from one end to another in one hundred years, he will not be able to do so." Another narration from Abu Hurairah (May Allah be pleased with him) is: The Messenger of Allah (ﷺ) said, "A rider will not be able to cross its (the tree's) shade even after travelling for one hundred years." <b>[Al-Bukhari and Muslim]</b>

وعن أبي سعيد الخدري رضي الله عنه عن النبي صلى الله عليه وسلم قال‏:‏ ‏"‏إن في الجنة لشجرة يسير الراكب الجواد المضمر السريع مائة سنة ما يقطعها ‏"‏ ‏(‏‏(‏متفق عليه‏)‏‏)‏‏.‏ وروياه في ‏"‏الصحيحين‏"‏ أيضاً من رواية أبي هريرة رضي الله عنه قال‏:‏ ‏"‏يسير الراكب في سورة في ظلها سنة ما يقطعها‏"‏‏.‏

References1 variant
In-Book Reference
Book 19, Hadith 18
Sharh · explanationclick to expand
<b>Guidance from the Hadith:</b><br> 1) The trees of Paradise are huge and their shades are very lengthy, which indicates Allah’s bounty and grace towards His pious servants.<br> 2) It indicates how vast Paradise is. Paradise is the commodity of Allah Almighty offered to the believers. What an excellent commodity!