How is the inheritance distributed among the mother, two sons, and two daughters after the father's death, and are the amounts spent on some heirs during the father's lifetime deducted from their inheritance shares, knowing that the father enjoined that the inheritance be distributed according to Islamic law without including the eldest sister due to her marriage?

The father's expenditure on some of his children to meet their needs does not affect their share of the inheritance, and the father has no right to disinherit any of his children. The wife receives one-eighth if the deceased has children, and the remainder is divided among the children, with the male receiving the share of two females. The brothers are advised to treat their unmarried sister kindly and to provide for her when she marries. Matters of inheritance should be referred to the Sharia courts for investigation to ensure there are no wills, debts, or other rights that take precedence over the heirs' right.