‏البر والصلة والآداب‏ : Hadeeth No:6257 Abu Musa reported Allaah's Messenger (sallAllaahu alayhi wa sallam) as saying: A believer is like a brick for another believer, the one supporting the other....

‏الزهد والرقائق‏ : Hadeeth No:7129 Abu Huraira reported Allaah's Messenger (sallAllaahu alayhi wa sallam) as saying: The yawning as from the devil. So when one of you yawns he should try to restrain it as far as it lies in his power....