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 3252, 3253

Narrated Abu Huraira:

The Prophet (ﷺ) said "There is a tree in Paradise (which is so big and huge that) a rider could travel in its shade for a hundred years. And if you wish, you can recite:--'In shade long extended..' (56. 30) and a place in Paradise equal to an arrow bow of one of you, is better than (the whole earth) on which the sun rises and sets."

حَدَّثَنَا مُحَمَّدُ بْنُ سِنَانٍ، حَدَّثَنَا فُلَيْحُ بْنُ سُلَيْمَانَ، حَدَّثَنَا هِلاَلُ بْنُ عَلِيٍّ، عَنْ عَبْدِ الرَّحْمَنِ بْنِ أَبِي عَمْرَةَ، عَنْ أَبِي هُرَيْرَةَ ـ رضى الله عنه ـ عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ ‏"‏ إِنَّ فِي الْجَنَّةِ لَشَجَرَةً يَسِيرُ الرَّاكِبُ فِي ظِلِّهَا مِائَةَ سَنَةٍ، وَاقْرَءُوا إِنْ شِئْتُمْ ‏{‏وَظِلٍّ مَمْدُودٍ‏}‏‏"‏

«وَلَقَابُ قَوْسِ أَحَدِكُمْ فِي الْجَنَّةِ خَيْرٌ مِمَّا طَلَعَتْ عَلَيْهِ الشَّمْسُ أَوْ تَغْرُبُ».

Reference : Sahih al-Bukhari 3252, 3253
In-book reference : Book 59, Hadith 63
USC-MSA web (English) reference : Vol. 4, Book 54, Hadith 475
  (deprecated numbering scheme)