Sahih Muslim 6066
صحيح مسلم#6066SahihAl-Bara' reported that Allah's Messenger (ﷺ) had the most handsome face amongst men and he had the best disposition and he was neither very tall nor short-statured
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Every narration in Sahih Muslim is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 43:124