Musannaf Ibn Abi Shayba 18:1012

Abu Bakr narrated to us, he said: Abd al-A’la narrated to us, from Yunus, from al-Hasan, he said: Abu Musa said: "There is no adversary on the Day of Resurrection more hateful to me than a man whom I killed, whose jugular veins are gushing blood, and he says: 'O Lord, ask this one: for what did he kill me?'"