Do the daughters of the second wife inherit only from their mother, or do the son and daughter from the deceased first wife share in the inheritance with them, this being after the father's death and before the division of his estate?

There are fifteen male heirs and ten female heirs. The method of distributing the inheritance cannot be explained until the heirs are definitively identified without any ambiguity. If the father's inheritance is divided among his heirs, the share of his second wife, who died after him, which is one-eighth, is set aside. This share is then added to what she left behind, and that total is divided among her heirs. If the second wife left no heirs other than her two daughters, then her inheritance is divided between them by both prescribed share (fard) and return (radd). They take two-thirds as their prescribed share, and the remaining one-third is also returned to them if there is no 'asabah (agnate heir). The husband's sons from another mother are not considered among her heirs. If there is another heir besides the two daughters, the distribution will change. The matter should be referred to the Sharia courts or experts should be consulted to ensure that all heirs are identified and that there are no wills or debts that take precedence over the heirs' rights.