Sahih al-Bukhari 3549
صحيح البخاري#3549SahihNarrated Al-Bara:Allah's Messenger (ﷺ) was the handsomest of all the people, and had the best appearance. He was neither very tall nor short
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: 61:58