Hadith 4017
´It was narrated from 'Ubaid bin 'Umair that :` His father - who was one of the Companions of the Prophet [SAW] - told him: "A man said: 'O Messenger of Allah, what are the major sins?' He said: 'They are seven; the most grievous of which are associating others with Allah, killing a soul unlawfully and fleeing (from the battlefield) on the day of the march.'" It is abridged.
Hadith 4807
´It was narrated that Ibn 'Abbas said:` "A man killed another man during the time of the Messenger of Allah, and the Prophet set the Diyah at twelve thousand. And he mentioned His saying: And they could not find any cause to do so except that Allah and His Messenger had enriched them of His Bounty. concerning them taking the Dyah." (Hasan) This is the wording of Abu Dawud.