Concerning your children, God enjoins you that a male shall receive a share equivalent to that of two females. But if there are more than two females, then their share is two thirds of the inheritance. If there is only one, she will receive the half. Each of your parents receives a sixth of what you leave if you have children. If you are childless and your heirs are your parents, your mother receives a third. If you have brothers [or sisters] your mother receives a sixth, after [the deduction of] any bequest you make or the repayment of any debts with regard to your father and your sons. You do not know which of them is going to benefit you more: but this fixing of portions is by God and He is all knowing and all wise.