Sahih al-Bukhari 2159
صحيح البخاري#2159Sahihحَدَّثَنِي عَبْدُ اللَّهِ بْنُ صَبَّاحٍ، حَدَّثَنَا أَبُو عَلِيٍّ الْحَنَفِيُّ، عَنْ عَبْدِ الرَّحْمَنِ بْنِ عَبْدِ اللَّهِ بْنِ دِينَارٍ، قَالَ حَدَّثَنِي أَبِي، عَنْ عَبْدِ اللَّهِ بْنِ عُمَرَ ـ رضى الله عنهما ـ قَالَ نَهَى رَسُولُ اللَّهِ صلى الله عليه وسلم أَنْ يَبِيعَ حَاضِرٌ لِبَادٍ. وَبِهِ قَالَ ابْنُ عَبَّاسٍ.
Narrated `Abdullah bin `Umar:Allah's Messenger (ﷺ) forbade the selling of the goods of a desert dweller by a town person
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: 34:110