Sahih al-Bukhari 2621
صحيح البخاري#2621Sahihحَدَّثَنَا مُسْلِمُ بْنُ إِبْرَاهِيمَ، حَدَّثَنَا هِشَامٌ، وَشُعْبَةُ، قَالاَ حَدَّثَنَا قَتَادَةُ، عَنْ سَعِيدِ بْنِ الْمُسَيَّبِ، عَنِ ابْنِ عَبَّاسٍ ـ رضى الله عنهما ـ قَالَ قَالَ النَّبِيُّ صلى الله عليه وسلم " الْعَائِدُ فِي هِبَتِهِ كَالْعَائِدِ فِي قَيْئِهِ ".
Narrated Ibn `Abbas:The Prophet (ﷺ) said, "He who takes back his present is like him who swallows his vomit
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: 51:53