COMMENTARY on 4:11
Mustafa Khattab:

Translation:
Allah commands you regarding your children: the share of the male will be twice that of the female.4 If you leave only two ˹or more˺ females, their share is two-thirds of the estate. But if there is only one female, her share will be one-half. Each parent is entitled to one-sixth if you leave offspring.4 But if you are childless and your parents are the only heirs, then your mother will receive one-third.4 But if you leave siblings, then your mother will receive one-sixth4—after the fulfilment of bequests and debts.4 ˹Be fair to˺ your parents and children, as you do not ˹fully˺ know who is more beneficial to you.4 ˹This is˺ an obligation from Allah. Surely Allah is All-Knowing, All-Wise.
Commentary:
4   According to Islamic law of inheritance, a female—whether she is a mother, a wife, a sister, a daughter, etc.—gets one of three shares, depending on her closeness to the deceased:

 

A. Yusuf Ali:

Translation:
Allah (thus) directs you as regards your Children´s 516 (Inheritance): to the male, a portion equal to that of two females: if only daughters, two or more, 517 their share is two-thirds of the inheritance; if only one, her share is a half. For parents, a sixth share of the inheritance to each, if the deceased left children; if no children, and the parents are the (only) heirs, the mother has a third; if the deceased Left brothers (or sisters) the mother has a sixth. (The distribution in all cases (´s) after the payment of legacies and debts. You know not whether your parents or your children are nearest to you in benefit. These are settled portions ordained 518 by Allah. and Allah is All-knowing, All-wise.
Commentary:

516  The principles of inheritance law are laid down in broad outline in the Qur'an; the precise details have been worked out on the basis of the Prophet's practice and that of his Companions, and by interpretation and analogy. Muslim jurists have collected a vast amount of learning on this subject, and this body of law is enough by itself to form the subject of life-long study. Here we shall deal only with the broad principles to be gathered from the Text, as interpreted by the Jurists. (1) The power of testamentary disposition extends over only one-third of the Property; the remaining two-thirds are distributed among heirs as laid down. (2) All distribution takes place after the legacies and debts (including funeral expenses) have first been paid. (3) Legacies cannot be left to any of the heirs included in the scheme of distribution; or it will amount to upsetting the shares and undue preference of one heir to another. (4) Generally, but not always, the male takes a share double that of a female in his own category.

517  At first sight, the Arabic words seem to mean: "If more than two daughters." But the alternative in the next clause is: "if only one daughter." Logically, therefore, the first clause must mean: "if daughters, two or more." This is the general interpretation, and is confirmed by the supplementary provision in 4:176 at the end of the Surah, which should be read along with this.

518  The verse deals with the portions allotted to (a) children, and (b) parents. The next verse deals with the portions allotted to (c) husband or wife of the deceased, and (d) collaterals. The children's shares are fixed, but their amount will depend upon what goes to the parents. If both parents are living, and there are also children, both father and mother take a sixth each; if only one parent is living, he or she takes his or her sixth; and the rest goes to the children. If the parents are living, and there is no child or other heir, the mother gets a third (and the father the remaining two-thirds); if there are no children, but there are brothers or sisters (this is interpreted strictly in the plural), the mother has a sixth, and the father apparently the residue, as the father excludes collaterals. This is far from being an exhaustive statement, but it establishes the proposition that children and parents have always some share if they survive, but their shares are affected by the existence and number of the heirs in these categories.

 

Muhammad Asad:

Translation:
CONCERNING [the inheritance of] your children, God enjoins [this] upon you: 8 The male shall have the equal of two females’ share; but if there are more than two females, they shall have two-thirds of what [their parents] leave behind; and if there is only one daughter, she shall have one-half thereof. And as for the parents [of the deceased], each of them shall have one-sixth of what he leaves behind, in the event of his having [left] a child; but if he has left no child and his parents are his [only] heirs, then his mother shall have one-third; and if he has brothers and sisters, then his mother shall have one-sixth after [the deduction of] any bequest he may have made, or any debt [he may have incurred]. As for your parents and your children - you know not which of them is more deserving of benefit from you: [therefore this] ordinance from God. Verily, God is all-knowing, wise.
Commentary:
8  In my notes on verses 11-12, which spell out the legal shares of inheritance due to the next of kin, no attempt has been made to analyze all the legal implications of this ordinance. The laws of inheritance are the subject of a special, and very elaborate, branch of Islamic jurisprudence, and their full elucidation would go far beyond the scope of explanatory notes which aim at no more than making the text of the Qur’an accessible to the understanding of the non-specialized reader.