Anas narrated that the Prophet said:
"Indeed in Paradise there is a tree under whose shade a rider can travel for one hundred years without stopping. Recite if you wish: And in shave extended. And water flowing constantly." (TR)
English reference (TR): Vol. 5, Book 44, Hadith 3293 (TR)
Arabic reference (TR): Book 47, Hadith 3604 (TR)