An-Nisa 4:11 يوصيكم الله في اولادكم للذكر مثل حظ الانثيين فان كن نساء فوق اثنتين فلهن ثلثا ما ترك وان كانت واحدة فلها النصف ولابويه لكل واحد منهما السدس مما ترك ان كان له ولد فان لم يكن له ولد وورثه ابواه فلامه الثلث فان كان له اخوة فلامه السدس من بعد وصية يوصي بها او دين اباوكم وابناوكم لا تدرون ايهم اقرب لكم نفعا فريضة من الله ان الله كان عليما حكيما ١١

Concerning your children, God commands you that a son should have the equivalent share of two daughters. If there are only daughters, two or more should share two-thirds of the inheritance, if one, she should have half. Parents inherit a sixth each if the deceased leaves children; if he leaves no children and his parents are his sole heirs, his mother has a third, unless he has brothers, in which case she has a sixth. [In all cases, the distribution comes] after payment of any bequests or debts. You cannot know which of your parents or your children is more beneficial to you: this is a law from God, and He is all knowing, all wise.