Chapter 54: The Book of Paradise, its Description, its Bounties and its Inhabitants
Sahl b. Sa' d reported Allah' s Messenger (ﷺ) as saying: In Paradise, there is a tree under the shadow of which a rider can travel for a hundred years without covering (the distance) completely. This hadith has also been transmitted on the authority of Abu Sa' id al-Khudri that Allah' s Apostle (ﷺ) is reported to have said: In Paradise, there is a tree under the shadow of which a rider of a fine and swift-footed horse would travel for a hundred years without covering the distance completely. There would be the pleasure of Allah for the inmates of Paradise and He would never be annoyed with them.
Sahih Muslim 2828