It is narrated from Sayyiduna Ibn Amr (may Allah be pleased with him) that regarding a child who is attributed to his lineage after his father's death, and whose claim is made by the heirs of the deceased, the Prophet Muhammad (peace and blessings be upon him) gave this ruling: "If the child is from a free woman whom the deceased had married, or from his owned slave woman, then his lineage will be established from the deceased. But if he is the result of sin from any free woman or slave woman, then his lineage will not be established from the deceased, even if his own father claims him. He is the product of adultery and is his mother's son, and he belongs to her family, whoever they may be, whether free or slave."