´Narrated Abu Hurairah:` that the Messenger of Allah (ﷺ) said: "The sneeze is from Allah and the yawn is from Ash-Shaitan. So when one of you yawns let him cover his mouth with his hand. For when he says 'Ah, Ah' Ash-Shaitan laughs from inside his opening." [And indeed Allah loves the sneeze and He dislikes the Yawn, so when a man says Ah, Ah when yawning, indeed Ash-Shaitan laughs from inside his opening."]
Hadith Referenceسنن ترمذي / كتاب الأدب عن رسول الله صلى الله عليه وسلم / 2746
Hadith Gradingالألبانی:حسن صحيح، التعليق على ابن خزيمة (921 - 922) ، الإرواء (779)
´Narrated Abu Hurairah:` that the Messenger of Allah (ﷺ) said: "Indeed Allah loves sneezing and He dislikes the yawn. So when one of you sneezes and says 'Al-Hamdulillah (All praise is due to Allah),' then it is a right due from every one who hears him to say: 'Yarhamukallah (May Allah have mercy upon you)' As for yawning then when one of you yawns let him suppress it as much as possible and not say: "Hah Hah' for that is only from Ash-Shaitan laughing at him."
Hadith Referenceسنن ترمذي / كتاب الأدب عن رسول الله صلى الله عليه وسلم / 2747
Hadith Gradingالألبانی:صحيح، الإرواء (776)
Hadith Takhrij«صحیح البخاری/بدء الخلق 11 (3289) ، والأدب 125 (6223) ، و 26 (6262) ، صحیح مسلم/الزہد 9 (2995) ، سنن ابی داود/ الأدب 97 (5028) ( تحفة الأشراف : 14322) ، و مسند احمد (2/265، 428، 517) وانظر ما تقدم برقم 370 (صحیح)»