Amr bin Shu'aib narrates from his father, from his grandfather: Sayyiduna Umar bin Khattab (may Allah be pleased with him) said to Qatadah bin Abdullah: "If I had not heard the Prophet Muhammad (peace and blessings be upon him) say: 'Retaliation (qisas) for a child will not be taken from the parent,' I would have killed you (the narrator is in doubt, perhaps these are the words: 'I would have struck your neck')."