Abu Hurairah narrated that the Messenger of Allah (s.a.w) said:
"Verily, in Paradise there is a tree, a rider will travel in it's shade for a hundred years."
Other chains report similar narrations.
Abu Sa'eed Al-Khudri narrated that the Prophet (s.a.w) said:
"In Paradise there is a tree, a rider will travel in its shade for a hundred years without reaching an end." He said: "And that is the extended shade."