It is narrated from Sayyiduna Abdullah bin Amr bin al-As (may Allah be pleased with them both) that a man deliberately killed his son. When his case was presented before Sayyiduna Umar bin Khattab (may Allah be pleased with him), he determined as blood money for the killer thirty hiqqahs, thirty jadh’ahs, and forty two-toothed camels, and said: The killer does not become an heir. Then he said: If I had not heard the Messenger of Allah (peace and blessings be upon him) say that a father should not be killed in retaliation for his child, I would have killed you in retribution.