question #3 Sahih al-Bukhari 4881, Book 65, Hadith 401 : What is the significance of the Quranic verse ‘In shade long extended’ in relation to the description of Paradise?

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.