٢- مُحَمَّدُ بْنُ يَحْيَى عَنْ مُحَمَّدِ بْنِ الْحُسَيْنِ عَنْ مُحَمَّدِ بْنِ سِنَانٍ عَنْ أَبِي الْحَسَنِ (عَلَيْهِ السَّلام) قَالَ سَأَلْتُهُ عَنِ الرَّجُلِ يَتَزَوَّجُ الْمَرْأَةَ وَيَتَزَوَّجُ أُمَّ وَلَدٍ لأبِيهَا قَالَ لا بَأْسَ بِذَلِكَ.
2. Muhammad ibn Yahya has narrated from Muhammad ibn al-Husayn from Muhammad ibn Sinan who has said the following: “I once asked abu al-Hassan , about the case of a man who marries a woman and a mother of the child of her father. He (the Imam) said, ‘It is not unlawful.”’ 