Language:
كتاب بدء الخلق
59  
Beginning of Creation
(8)
Chapter: The characteristics of Paradise, and the fact that it has already been created
(8)
باب مَا جَاءَ فِي صِفَةِ الْجَنَّةِ وَأَنَّهَا مَخْلُوقَةٌ
Sahih al-Bukhari 3251

Narrated Anas bin Malik:

The Prophet (ﷺ) 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."

حَدَّثَنَا رَوْحُ بْنُ عَبْدِ الْمُؤْمِنِ، حَدَّثَنَا يَزِيدُ بْنُ زُرَيْعٍ، حَدَّثَنَا سَعِيدٌ، عَنْ قَتَادَةَ، حَدَّثَنَا أَنَسُ بْنُ مَالِكٍ ـ رضى الله عنه ـ عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ ‏ "‏ إِنَّ فِي الْجَنَّةِ لَشَجَرَةً يَسِيرُ الرَّاكِبُ فِي ظِلِّهَا مِائَةَ عَامٍ لاَ يَقْطَعُهَا ‏"‏‏.‏
Reference : Sahih al-Bukhari 3251
In-book reference : Book 59, Hadith 62
USC-MSA web (English) reference : Vol. 4, Book 54, Hadith 474
  (deprecated numbering scheme)