Chapter on a Man Disinheriting His Son for Having Relations with His Father's Umm Al-Walad

And the confirmation of this is what was narrated by Ahmad ibn Muhammad ibn Isa from Abdul Aziz ibn Al-Muhtadi from Sa'id ibn Sa'd, who said: 'I asked Imam عليه السلام - meaning Abu Al-Hasan Imam Ali ibn Musa Ar-Ridha عليه السلام - about a man who had a son whom he acknowledged and then later disowned, excluding him from the inheritance. I am his executor, so what should I do?' Imam عليه السلام said: "The son remains legally his due to his prior public acknowledgment. The executor cannot deny him anything that is already known."