Abu Sa'id reported God’s Messenger as saying, “When one of you yawns during prayer he must restrain it as much as possible, for the devil gets in.”
Muslim transmitted it. In a version by Bukhari from Abu Huraira he said, “When one of you yawns during prayer he must restrain it as much as possible and not say ‘Ha’, for that comes from the devil who is laughing at him.”(Or “at it”, i.e. at this action).
‘Umar b. al-Khattab said that the Prophet (ﷺ) sent to Najd an expedition which took much booty and came back quickly. A man who had not gone out said, “We have never seen an expedition return more quickly or bring finer…
Mu'awiya b. al-Hakam said: While I was praying along with God's Messenger a man in the campany sneezed, and I said, “God have mercy on you!” The people gave me disapproving looks, so I said, “Woe is me! What do you mean…
‘Abdallah b. Mas'ud said: We used to greet the Prophet (ﷺ) while he was engaged in prayer and he would respond to our greeting, but when we returned from the Negus* we greeted him and he did not respond to us, so we said…
Mu'aiqib quoted the Prohpet as saying about a man who smoothed the ground where he prostrated himself, “If you do it, do it only once.”
(Bukhari and Muslim.)
‘A’isha said: I asked God’s Messenger about looking to the side during prayer and he said, “It is something which the devil snatches from a servant’s prayer.”
(Bukhari and Muslim.)