Sahih al-Bukhari 4881
صحيح البخاري#4881Sahihحَدَّثَنَا عَلِيُّ بْنُ عَبْدِ اللَّهِ، حَدَّثَنَا سُفْيَانُ، عَنْ أَبِي الزِّنَادِ، عَنِ الأَعْرَجِ، عَنْ أَبِي هُرَيْرَةَ ـ رضى الله عنه ـ يَبْلُغُ بِهِ النَّبِيَّ صلى الله عليه وسلم قَالَ " إِنَّ فِي الْجَنَّةِ شَجَرَةً يَسِيرُ الرَّاكِبُ فِي ظِلِّهَا مِائَةَ عَامٍ لاَ يَقْطَعُهَا، وَاقْرَءُوا إِنْ شِئْتُمْ {وَظِلٍّ مَمْدُودٍ}".
Narrated Abu Huraira:The Prophet (ﷺ) said, "In Paradise there is a tree which is so big that a rider can travel in its shade for one hundred years without passing it; and if you wish, you can recite: 'In shade long extended
Scholarly Authentication
The label above is the grade most of these scholars gave — one dissenting opinion no longer speaks for all of them. If any scholar calls a narration fabricated, that verdict is shown instead, whatever the others say. Each scholar's own wording:
Every narration in Sahih al-Bukhari is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 65:401