Musannaf Ibn Abi Shaybah 29620 — A man who kills a man while another

Yahya bin Abi Kathir said: Two men were brought to Sayyiduna Ali (may Allah be pleased with him); one of them had killed and the other had held the victim. He had the one who killed put to death, and he said to the one who held him: You held him for death, so I shall keep you confined in prison until you too die.