It was narrated that Mujahid said: A man struck a son of his with a sword and killed him. The matter was referred to 'Umar and he said. Were it not that I heard the Messenger of Allah ﷺ say, “No father should be executed in retaliation for killing his son.` I would have executed you before you left.

لا تلتقي أسانيد هذه الأحاديث عند راوٍ واحد، وهي على ٢ رواة في أعلاها.