Sahih al-Bukhari 706
صحيح البخاري#706SahihNarrated Anas:The Prophet (ﷺ) used to pray a short prayer (in congregation) but used to offer it in a perfect manner
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: 10:101