(1) باب إِنَّ فِي الْجَنَّةِ شَجَرَةً يَسِيرُ الرَّاكِبُ فِي ظِلِّهَا مِائَةَ عَامٍ لاَ يَقْطَعُهَا
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.
Reference: Sahih Muslim 2827, 2828
In-book reference: Book 53, Hadith 9
USC-MSA web (English) reference(deprecated numbering scheme): Book 40, Hadith 6786