How is the money remaining after the death of a husband who worked for an oil company and had other businesses divided, and is it permissible for the wife to take her share alone from the pre-agreed profits, knowing that both of the husband's parents passed away before him?

The money must be withdrawn from the usurious bank, and if any interest has accrued on it, it must be disposed of by spending it on charitable causes. As for the share in the project, it was a gift from the husband and the brother. Since the husband passed away before you took possession of the gift from him, his gift became void, and you are left with half of the share gifted by the brother. Regarding the inheritance, if the husband had no grandfather or grandmother, his inheritors are the wife, sons, and daughters. For the money deposited between the spouses in equal halves, you are entitled to one-quarter of it as your own, and the remaining three-quarters are part of the husband's total estate. The matter of inheritances must be referred to the Sharia courts, due to the possibility of other heirs, wills, or debts that the heirs may not be aware of.