God instructs you regarding your children: The male receives the equivalent of the share of two females. If they are daughters, more than two, they get two-thirds of what he leaves. If there is only one, she gets one-half. As for the parents, each gets one-sixth of what he leaves, if he had children. If he had no children, and his parents inherit from him, his mother gets one-third. If he has siblings, his mother gets one-sixth. After fulfilling any bequest and paying off debts. Your parents and your children—you do not know which are closer to you in welfare. This is God's Law. God is Knowing and Judicious.

The Holy Quran · An-Nisaa (The Women) · 4:11