What is the division of inheritance among a full brother, a full sister, a half-sister (father's side), and the paternal grandfather?
Chapter on Inheritance of the Grandfather
Al-Mughni
Book of Inheritance Shares (Farā'id)
Primary text
The paternal grandfather receives one-third (al-thuluth). The remaining portion is divided among the offspring of both parents (the full brother and full sister) in a ratio of three shares: two for the brother and one for the sister. The distribution is correctly calculated out of nine parts.
Supporting text
Ali and Ibn Mas'ud rule that the estate should be divided equally between the offspring of both parents and the grandfather, with five shares total.