Al-Kāfi - The Book of Inheritance

Al-Kāfi - The Book of Inheritance Chapter: Brothers from a Mother with the Grandfather َّدُ بْنُ يَحْيَى عَنْ أَحْ٠َحْبُوبٍ عَنِ ابْنِ سِنَانٍ قَالَ سَأَلْتُ أَبَا عَبْدِ اللهِ (عَلَيْهِ السَّلا٠) عَنْ رَجُلٍ تَرَكَ أَخَاهُ لأ٠ْ يَتْرُكْ وَارِثاً غَيْرَهُ قَالَ الْ٠َالُ لَهُ قُلْتُ فَإِنْ كَانَ ٠ِّ جَدٌّ قَالَ يُعْطَى الأخُ لِلأ٠ِّ السُّدُسَ وَيُعْطَى الْجَدُّ الْبَاقِيَ قُلْتُ فَإِنْ كَانَ الأخُ لأبٍ وَجَدٌّ قَالَ الْ٠1.

Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad from ibn Mahbub from ibn Sinan who has narrated the following: “I once asked abu ‘Abd Allah (a.s.), about the case of a man who leaves behind his brother from his mother. He (the Imam) said, ‘If he has not left other heirs besides him the legacy belongs to him.’ I then asked about a brother from a mother with a grandfather.

He (the Imam) said, ‘One-sixth must be given to the brother from his mother and the rest is given to the grandfather.’ I then asked about a brother from the father and a grandfather. He (the Imam) said, ‘The legacy between them is in equal shares.’” صحيح - Allamah Baqir al-Majlisi (Mirʾāt al-ʿUqūl fī Sharḥ Akhbār Āl al-Rasūl (3/165))