‏البر والصلة والآداب‏ : Hadeeth No:6313 Abu Huraira reported Allaah's Messenger (sallAllaahu alayhi wa sallam) as saying: The strong-man is not one who wrestles well but the strong man is one who controls himself when he is in a fit of rage....

‏الإيمان : Hadeeth No:203 It is narrated on the authority of Thabit b. Dahhak that the Prophet of Allaah (sallAllaahu alayhi wa sallam) observed: He who took deliberately a false oath on a religion other than Islam would become that which he had professed. And he who killed himself with anything Allaah would torment him with...