1- عِدَّةٌ مِنْ أَصْحَابِنَا عَنْ سَهْلِ بْنِ زِيَادٍ وَمُحَمَّدُ بْنُ يَحْيَى عَنْ أَحْمَدَ بْنِ مُحَمَّدٍ جَمِيعاً عَنِ ابْنِ مَحْبُوبٍ عَنْ سَعْدِ بْنِ أَبِي خَلَفٍ عَنْ أَبِي الْحَسَنِ الأوَّلِ (عَلَيْهِ السَّلام) قَالَ بَنَاتُ الابْنَةِ يَقُمْنَ مَقَامَ الْبِنْتِ إِذَا لَمْ يَكُنْ لِلْمَيِّتِ بَنَاتٌ وَلا وَارِثٌ غَيْرُهُنَّ وَبَنَاتُ الابْنِ يَقُمْنَ مَقَامَ الابْنِ إِذَا لَمْ يَكُنْ لِلْمَيِّتِ بَنَاتٌ أَوْلادٌ وَلا وَارِثٌ غَيْرُهُنَّ.
1. A number of our people have narrated from Sahl ibn Ziyad and Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad all from ibn Mahbub from Sa‘d ibn abu Khalaf who has narrated the following: “Abu al-Hassan, al-Awwal 
, has said, ‘Granddaughters replace their mother if the deceased does not leave behind any daughters and there is no other heir. Daughters of one’s son replace one’s son if the deceased does not leave behind any daughters of children and there are no other heirs besides them.’”
