Sahih al-Bukhari 491
صحيح البخاري#491Sahihوَأَنَّ عَبْدَ اللَّهِ بْنَ عُمَرَ حَدَّثَهُ أَنَّ النَّبِيَّ صلى الله عليه وسلم كَانَ يَنْزِلُ بِذِي طُوًى وَيَبِيتُ حَتَّى يُصْبِحَ، يُصَلِّي الصُّبْحَ حِينَ يَقْدَمُ مَكَّةَ، وَمُصَلَّى رَسُولِ اللَّهِ صلى الله عليه وسلم ذَلِكَ عَلَى أَكَمَةٍ غَلِيظَةٍ، لَيْسَ فِي الْمَسْجِدِ الَّذِي بُنِيَ ثَمَّ، وَلَكِنْ أَسْفَلَ مِنْ ذَلِكَ عَلَى أَكَمَةٍ غَلِيظَةٍ.
See translation for hadith 484 above
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: 8:138