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.
Sahih Muslim Book 55, Hadith 74
← Previous Hadith The yawning as from the devil. So when one of you yawns he should try to restrain it as far as it lies in his power.

Sahih Muslim Book 55, Hadith 73 Next Hadith → When one of you yawns, he should try to restrain it with cue help of his hand since it is the Satan that enters therein.

Sahih Muslim Book 55, Hadith 75