Abu Hurayrah reported that the Prophet (peace and blessings of Allaah be upon him) said: "Yawning is from the Shaytaan. If any of you feels the urge to yawn, let him resist it as much as possible, for if any of you says ‘Ha’ (makes a noise when yawning), the Shaytaan laughs." (al-Bukhari no. 3289)
Abu Hurayrah reported that the Prophet (peace and blessings of Allaah be upon him) said: "Allaah loves the act of sneezing and dislikes the act of yawning. If any one of you sneezes and praises Allaah, it is a duty on every Muslim who hears him to say ‘Yarhamak Allaah (May Allaah have mercy on you).’ As for yawning, it is from Shaytaan, so if any of you feels the urge to yawn, let him resist it as much as he can, for if any of you yawns, the Shaytaan laughs at him." (al-Bukhari, Fath, no. 6226)
Abu Hurayrah reported that the Messenger of Allaah (peace and blessings of Allaah be upon him) said: "Yawning is from Shaytaan, so if any of you feels the urge to yawn, let him resist it as much as he can." (Muslim, 2994)
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