Sahih al-Bukhari 1912
صحيح البخاري#1912SahihNarrated Abu Bakra:The Prophet (ﷺ) said, "The two months of `Id i.e. Ramadan and Dhul-Hijja, do not decrease (in superiority)
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Every narration in Sahih al-Bukhari is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 30:22