‏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....

‏الفتن وأشراط الساعة‏ : Hadeeth No:7051 Anas reported that a person asked Allaah's Messenger (sallAllaahu alayhi wa sallam) as to when the Last Hour would come. He had in his presence a young boy of the Ansar who was called Mabammad. Allaah's Messenger (sallAllaahu alayhi wa sallam) said: If this young boy lives. he may not grow very old ...