‏القسامة والمحاربين والقصاص والديات‏ : Hadeeth No:4156 'Abdullah (b. Mas'ud) reported: Allaah's Prophet (sallAllaahu alayhi wa sallam) having said: No person who is killed unjustly, but the share of (this offence of his also) falls upon the first son of Adam, for he was the first to introduce killing....

‏الصلاة : Hadeeth No:1372 A hadith like this has been narrated by Abu Huraira....