Musannaf Ibn Abi Shayba 18:1035

Abu Bakr narrated to us, he said: Abu Mu'awiyah narrated to us, from al-A'mash, from 'Abdullah ibn Murrah, from Masruq, from 'Abdullah, who said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "No soul is killed unjustly, except that there is upon the first son of Adam a share of its blood, because he was the first to establish the practice of killing."