Sahih Muslim 7491
صحيح مسلم#7491SahihThe son of Abu Said al-Khudri reported on the authority of his father that Allah's Messenger (ﷺ) said:When one of you yawns, he should keep his mouth shut with the help of his hand, for it is the devil that enters therein
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: 55:74