Volume 8, Book 76, Number 559:
Narrated Abu Huraira:
The Prophet said, “The width between the two shoulders of a Kafir (disbeliever) will be equal to the
distance covered by a fast rider in three days.”
Volume 8, Book 76, Number 559t:
Narrated Sahl bin Sa’d:
Allah’s Apostle said, “In Paradise there is a tree so big that in its shade a rider may travel for one
hundred years without being able to cross it.”
Volume 8, Book 76, Number 559e:
Narrated Abu Sa’id:
The Prophet said: There is a tree in Paradise (so huge) that a fast (or a trained) rider may travel: for
one hundred years without being able to cross it.