 عِدَّةٌ مِنْ أَصْحَابِنَا عَنْ أَحْمَدَ بْنِ مُحَمَّدٍ عَنِ الْحُسَيْنِ بْنِ سَعِيدٍ عَنْ فَضَالَةَ بْنِ أَيُّوبَ عَنْ مُوسَى بْنِ بَكْرٍ عَنْ عَلِيِّ بْنِ سَعِيدٍ قَالَ قَالَ لِي زُرَارَةُ مَا تَقُولُ فِي رَجُلٍ تَرَكَ أَبَوَيْهِ وَإِخْوَتَهُ لأمِّهِ فَقُلْتُ لأمِّهِ السُّدُسُ وَلِلأبِ مَا بَقِيَ فَإِنْ كَانَ لَهُ إِخْوَةٌ فَلأمِّهِ السُّدُسُ وَقَالَ إِنَّمَا أُولَئِكَ الإخْوَةُ لِلأبِ وَالإخْوَةُ لِلأبِ وَالأمِّ وَهُوَ أَكْثَرُ لِنَصِيبِهَا إِنْ أَعْطَوُا الإخْوَةَ لِلأمِّ الثُّلُثَ وَأَعْطَوْهَا السُّدُسَ وَإِنَّمَا صَارَ لَهَا السُّدُسُ وَحَجَبَهَا الإخْوَةُ لِلأبِ وَالإخْوَةُ مِنَ الأبِ وَالأمِّ لأنَّ الأبَ يُنْفِقُ عَلَيْهِمْ فَوُفِّرَ نَصِيبُهُ وَانْتَقَصَتِ الأمُّ مِنْ أَجْلِ ذَلِكَ فَأَمَّا الإخْوَةُ مِنَ الأمِّ فَلَيْسُوا مِنْ هَذِهِ فِي شَيْ‏ءٍ لا يَحْجُبُونَ أُمَّهُمْ مِنَ الثُّلُثِ قُلْتُ فَهَلْ تَرِثُ الإخْوَةُ مِنَ الأمِّ شَيْئاً قَالَ لَيْسَ فِي هَذَا شَكٌّ إِنَّهُ كَمَا أَقُولُ لَكَ.
8. A number of our people have narrated from Ahmad ibn Muhammad from al-Husayn ibn Sa‘id from Fadalah ibn Ayyub from Musa ibn Bakr from Ali ibn Sa‘id who has narrated the following: “Zurarah once asked me, ‘What do you say about a man who leaves behind his parents and brothers from his mother?’ I replied, ‘The share of mother is one-sixth and the rest belongs to the father. ‘If there are brothers the share of the mother is one-sixth.’ He said, ‘These brothers are from the father. Brothers from father and mother receive the largest amount. Brothers from mother receive one-third and she receives one-sixth. It is one-sixth because brothers from father and brothers from father and mother bar her. The father spends on them so his share is expanded and the share of the mother is reduced for that reason. Brothers from the mother are not in it. They do not bar their mother from receiving one-third.’ I then asked, ‘Do brothers inherit from the mother anything?’ He said, ‘There is no doubt in it, it is just as I say to you.’” 