He was asked:

About a woman who died, leaving a husband, two daughters, her mother and two full sisters: do the sisters inherit?

He replied:

The husband’s prescribed share is one-quarter, the mother’s one-sixth, and the two daughters’ two-thirds. The original denominator is twelve, increased to thirteen through a proportional reduction of the prescribed shares. The sisters receive nothing alongside the daughters, because sisters in the presence of daughters are residuary heirs, and nothing remains for the residuary heirs. This is the position of the four imams.

He was asked:

About a woman who died, leaving a husband, a mother, a full sister, a paternal half-sister, and a maternal half-brother and half-sister.

He replied:

The estate is divided into ten shares. The original denominator is six, increased to ten through a proportional reduction of the prescribed shares. This case is called “Dhāt al-Furūkh” because of the extent of that adjustment. The prescribed allocations are: one-half for the husband; one-sixth, or one share, for the mother; three shares for the full sister; one-sixth for the paternal half-sister, completing the two-thirds; and one-third, or two shares, for the two maternal half-siblings. The total is thus ten shares. This is agreed upon by the four imams.