How is inheritance divided among a son, a brother, and two sisters, and does a divorced wife inherit from her husband?

A revocable divorcee inherits by consensus if the husband dies while she is still in her waiting period (iddah), because she is considered a wife. As for an irrevocable divorcee (al-mutallaqah al-ba'in), she does not inherit by consensus if her husband divorced her while he was healthy, or suffering from a non-life-threatening illness, due to the قطع (inqita') of the marital bond. Scholars differed regarding the inheritance of an irrevocably divorced woman when her husband divorced her during a life-threatening illness. The Malikis allowed her to inherit, while the majority of scholars did not. If the irrevocable divorce during a life-threatening illness was intended to deprive the wife of inheritance, then she inherits according to the Malikis and Hanbalis. The Hanbalis stipulate that she must not remarry or apostatize. The evidence for this is the ruling of Uthman (may Allah be pleased with him) regarding the inheritance of Abd al-Rahman ibn Awf's wife.

In the case of someone who died leaving behind a son, a full brother, and three full sisters, and no other heirs, the entire inheritance goes to the son by virtue of ta'sib (agnatic succession). The full brother and sisters receive nothing because the son deprives them completely.

It is important to note that inheritance matters are serious and complex. It is not sufficient to rely solely on a fatwa; rather, such cases must be referred to Sharia courts for investigation, or discussed directly with knowledgeable scholars, as there may be wills, debts, or other rights that take precedence over the heirs' rights.