Sahih al-Bukhari 1730
صحيح البخاري#1730Sahihحَدَّثَنَا أَبُو عَاصِمٍ، عَنِ ابْنِ جُرَيْجٍ، عَنِ الْحَسَنِ بْنِ مُسْلِمٍ، عَنْ طَاوُسٍ، عَنِ ابْنِ عَبَّاسٍ، عَنْ مُعَاوِيَةَ ـ رضى الله عنهم ـ قَالَ قَصَّرْتُ عَنْ رَسُولِ اللَّهِ صلى الله عليه وسلم بِمِشْقَصٍ.
Narrated Muawiya:I cut short the hair of Allah's Messenger (ﷺ) with a long blade
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: 25:208