Narrated Abu Huraira: The Prophet ﷺ said, "In Paradise there is a tree which is so big that a rider can travel in its shade for one hundred years without passing it; and if you wish, you can recite: 'In shade long extended'. 56.30.
The Quran also mentions this tree in (56:30) Surah Al-Waqi'ah 56 verse 30 where it says “In shade long extended” referring to the same tree mentioned by the Prophet ﷺ in this hadith. This verse further emphasizes on how great and vast this tree is; its shade extends far beyond what we can comprehend with our limited understanding.