[4:7] To the men belongs a share of what parents and kinsmen leave, and to the women belongs a share of what parents and kinsmen leave, whether it be little or much - an obligatory share.
The rule of inheritance does not vary because of virtue or good qualities, nor is it different because of fault, defect or sin. If a man dies leaving two sons, their rights are equivalent even if one of them is pious and God-fearing and the other wicked and disobedient. The God-fearing one does not get more because of his God-fearingness and the wicked one does not get less because of his wickedness. Likewise, the rule of faith is the beginning of a gift for Muslims. God Most High said: Then We bequeathed the Book to those of Our servants whom We chose. [35:32]. Then He said: Yet some of them are those who wrong themselves, and some of them... [35:32].