‏الفتن وأشراط الساعة‏ : Hadeeth No:6901 Abu Bakra reported Allaah's Messenger (sallAllaahu alayhi wa sallam) as saying: When two Muslims (confront each other) and the one amongst them attacks his brother with a weapon, both of them are at the brink of Hell-Fire. And when one of them kills his companion, both of them get into Hell-Fire....

‏الإمارة : Hadeeth No:4544 The same tradition has been transmitted by a different chain of narrators....