What is the distribution when three full brothers (share the same father and mother) are present, and a woman claims to be their full sister, but the eldest brother confirms she is a full sister, the middle confirms she is a sister only through the mother, and the youngest confirms she is a sister only through the father?
Chapter on Distant Kindred (Dhawu al-Arham)
Al-Mughni
Book of Inheritance Shares (Farā'id)
Primary text
The eldest brother must give her half of what he possesses. The middle brother gives one-sixth of what he possesses. The youngest brother gives one-seventh of what he possesses. The calculation for the total estate is derived from one hundred and twenty-six, based on the denominators of the shares confirmed by each brother (two for the eldest, six for the middle, and seven for the youngest). Since two is contained within six, the calculation involves multiplying six by seven, resulting in forty-two as the initial base for what each holds. She takes twenty-one from the eldest, seven from the middle, and six from the youngest, totaling thirty-four shares. This outcome follows the established measure (Qiyas) of Ibn Abi Laila.
Supporting text
According to the opinion of Abu Hanifa, she takes one-seventh of what the youngest holds, and half of that is added to the holding of one brother, and the other half to the other. The middle brother then divides his portion with the one who received the addition in thirds, giving ten parts to him and three to the claimant. These three parts are then added to what the eldest holds, and he divides his portion by four, giving three parts to the claimant and retaining one. The youngest's portion is then adjusted to fourteen so that one-seventh is a whole number. Multiplying by thirteen yields one hundred and eighty-two as the total base for their possessions. From this, she takes one-seventh of the youngest's share, which is twenty-six. Thirteen is added to the holdings of each of his brothers. The middle brother's new holding is then divided by thirteen, receiving five parts and giving seven to the eldest brother. The eldest brother then takes three-fourths of his total, resulting in one hundred and eighty, leaving him with sixty, the middle with one hundred and fifty, and the youngest with one hundred and fifty-six. Ultimately, this reduces to one-sixth of the total, which is ninety-one.