Narrated Anas bin Malik: The Prophet said, "There is a tree in Paradise (which is so big and huge that) if a rider travels in its shade for one hundred years, he would not be able to cross it."
Hadith Referenceصحيح البخاري / كتاب بدء الخلق / 3251
Hadith Gradingمحدثین:أحاديث صحيح البخاريّ كلّها صحيحة