Abu Hazim reported,

Sahl bin Saad reported that the Messenger of Allah ﷺ said, "In Paradise there is a tree under whose shade a rider may travel for a hundred years without crossing it."Abu Hazim said, "I related this to Numan bin Abu Ayyash, and he said, 'Abu Saeed narrated to me that the Prophet ﷺ said, "In Paradise there is a tree under which a rider on a swift, lean, well-trained steed may travel for a hundred years without crossing it."'"

Azami 12585

Sahih

عن أبي حازم

عن سهل بن سعد، عن رسول الله ﷺ قال: إن في الجنة لشجرة يسير الراكب فى ظلها مائة عام لا يقطعها. قال أبو حازم: فحدثت به النعمان بن أبي عياش، فقال: حدثني أبو سعيد عن النبي ﷺ قال: إن فى الجنة لشجرة يسير الراكب الجواد المضمر السريع مائة عام، ما يقطعها.

الأعظمي 12585صحيح
Contents
Reference
Commentary
Ayat
Collection
Jami al-Kamil
Book
Tafsir of the great Quran
Chapter
Virtues of Surah Baqarah
Section
His saying, "The example of Paradise which the righteous have been promised, beneath it rivers flow, its food is eternal and so is its shade. That is the end of those who are righteous, and the end of the disbelievers is the Fire."
Numbering
Jami al-Kamil 12585 (2nd edition)