The Messenger of Allah ﷺ said, "In Paradise there is a tree so vast that a rider can travel in its shade for a hundred years."
حدثنا قتيبة حدثنا الليث عن سعيد بن أبي سعيد المقبري عن أبيه
عن رسول الله ﷺ أنه قال إن في الجنة لشجرة يسير الراكب في ظلها مائة سنة
Muslim also narrated it in Chapter on Paradise and its Blessings, section: There is a tree in Paradise under whose shade a rider would travel for a hundred years without crossing it, h: 2826, from Qutayba with the same wording. Bukhari also narrated it, h: 4881, from the hadith of Abu Hurairah with the same wording.There are also narrations on this subject from Anas [to come: 3293] and Abu Saeed [to come: 2524].