What is the distribution in the Akdariyya case involving the husband, mother, grandfather, and a sister?
Chapter on Inheritance of the Grandfather
Al-Mughni
Book of Inheritance Shares (Farā'id)
Primary text
The mother receives one-third, the sister receives half, and the grandfather receives one-sixth. The division of the grandfather's sixth and the sister's half is made over three shares: two for the grandfather and one for the sister. The distribution results in 27 shares: nine for the husband, six for the mother, eight for the grandfather, and four for the sister. This case is termed Al-Akdariyya.
Supporting text
The name Al-Akdariyya is attributed to this case because it complicated Zayd's principles regarding the grandfather, as Zayd had to allow an excess distribution (A'ul) which he generally did not permit in grandfather cases, and assigned a share to a sister when ordinarily the grandfather excludes sisters. Another view suggests the name came from Abd al-Malik ibn Marwan questioning a man named Al-Akdar, who erred in answering based on Zayd's school. Abu Bakr As-Siddiq and his followers rule that the sister is excluded, the mother receives one-third, and the remainder goes to the grandfather. Umar and Ibn Mas'ud assign half to the husband, half to the sister, one-sixth to the mother, and one-sixth to the grandfather, leading to an excess distribution to eight. Ali and Zayd assign half to the husband, half to the sister, one-third to the mother, and one-sixth to the grandfather, allowing an excess distribution to nine, as the mother is not veiled by children or brothers.