the sixth [as his allotted share]. The husband has his inheritance established by the saying of the Almighty: "And for you is half of what your wives leave" [Quran 4:12]. The wife has her inheritance established by His saying, the Almighty: "And for them is a fourth of what you leave" [Quran 4:12].

Section: They are all of two types: those with a fixed share (dhu fard) and agnates (asaba). All males are agnates except for the husband, the brother through the mother, and the father and grandfather when with the son. All females, if they are separate from their brothers, are possessors of a fixed share, except for the manumitting female patron and sisters when with daughters. The number of agnates: the son, his son even if of lower degree, the father, his father even if of higher degree, the brother through both parents, the brother through the father, their two sons even if of lower degree, paternal uncles similarly, their two sons even if of lower degree, the paternal uncles of the father, their two sons similarly forever, and the patron (mawla al-ni'ma). The number of females: daughters, sons' daughters, the mother, the grandmother from both sides even if of higher degree, and sisters from all three sides. [Also] the brother through the mother, the husband, and the wife. Those who are never excluded (at all) are five: the two spouses, the parents, and the offspring of the loins (the direct children); because they are related by themselves without an intermediary between them and the deceased that would exclude them. Those other than them among the heirs are related only through an intermediary; thus, they are excluded by one who is closer to the deceased than they are.