‏البر والصلة والآداب‏ : Hadeeth No:6260 Nu'man b. Bashir reported Allaah's Messenger (sallAllaahu alayhi wa sallam) as saying: The believers are like one person; if his head aches, the whole body aches with fever and sleeplessness....

‏الزكاة : Hadeeth No:2266 Abu Huraira reported Allaah's Messenger (sallAllaahu alayhi wa sallam) as saying: He who begs the riches of others to increase his own is asking only for live coals, so let him ask a little or much....