Sahih al-Bukhari 2828
صحيح البخاري#2828SahihNarrated Anas bin Malik:In the life-time of the Prophet, Abu Talha did not fast because of the Jihad, but after the Prophet (ﷺ) died I never saw him without fasting except on `Id-ul-Fitr and `Id-ul-Adha
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: 56:44