Sahih al-Bukhari 1514
صحيح البخاري#1514Sahihحَدَّثَنَا أَحْمَدُ بْنُ عِيسَى، حَدَّثَنَا ابْنُ وَهْبٍ، عَنْ يُونُسَ، عَنِ ابْنِ شِهَابٍ، أَنَّ سَالِمَ بْنَ عَبْدِ اللَّهِ، أَخْبَرَهُ أَنَّ ابْنَ عُمَرَ ـ رضى الله عنهما ـ قَالَ رَأَيْتُ رَسُولَ اللَّهِ صلى الله عليه وسلم يَرْكَبُ رَاحِلَتَهُ بِذِي الْحُلَيْفَةِ ثُمَّ يُهِلُّ حَتَّى تَسْتَوِيَ بِهِ قَائِمَةً.
Narrated Ibn `Umar:I saw that Allah's Messenger (ﷺ) used to ride on his Mount at Dhul Hulaifa and used to start saying, "Labbaik" when the Mount stood upright
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: 25:2