‏الزهد والرقائق‏ : Hadeeth No:7130 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 keep his mouth shut with the help of his hand, for it is the devil that enters therein....

‏الجهاد والسير‏ : Hadeeth No:4320 It is narrated by Ibn 'Umar that a woman was found killed in one of these battles; so the Messenger of Allaah (sallAllaahu alayhi wa sallam) forbade the killing of women and children....