‏الصلاة : Hadeeth No:997 Anas reported: The Messenger of Allaah (sallAllaahu alayhi wa sallam) said: Observe moderation in prostration, and let none of you stretch out his forearms (on the ground) like a dog....

‏الزهد والرقائق‏ : Hadeeth No:7131 The son of Abu Said al-Khudri reported on the authority of his father that Allaah's Messenger (sallAllaahu alayhi wa sallam) said: 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....