Sahih al-Bukhari 963
صحيح البخاري#963Sahihحَدَّثَنَا يَعْقُوبُ بْنُ إِبْرَاهِيمَ، قَالَ حَدَّثَنَا أَبُو أُسَامَةَ، قَالَ حَدَّثَنَا عُبَيْدُ اللَّهِ، عَنْ نَافِعٍ، عَنِ ابْنِ عُمَرَ، قَالَ كَانَ رَسُولُ اللَّهِ صلى الله عليه وسلم وَأَبُو بَكْرٍ وَعُمَرُ ـ رضى الله عنهما ـ يُصَلُّونَ الْعِيدَيْنِ قَبْلَ الْخُطْبَةِ.
Narrated Ibn `Umar:Allah's Messenger (ﷺ), Abu Bakr and `Umar! used to offer the two `Id prayers before delivering the Khutba
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: 13:12