‘Umar ibn Ḥafṣ ibn Ghiyāth narrated to us; my father narrated to us; al-Aʿmash narrated to us; he said: ‘Abdullāh ibn Murrah narrated to me, from Masrūq,

from ‘Abdullāh (may Allāh Almighty be content with him), who said: The Messenger of Allāh ﷺ said: “No soul is killed unjustly except that a share of its blood (sin) falls upon the first son of Prophet Ādam, because he was the first to establish the practice of killing.”