‏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....

‏الحج : Hadeeth No:2731 'Abdullah b. Umar (Allaah be pleased with them) reported Allaah's Messen- ger (sallAllaahu alayhi wa sallam) as saying: Five (are the animals) which, it one kills them In the state of Ihram, entail no sin for one (who does it): scorpion, rat, voracious dog, crow and kite....