What is the mother's share of her married daughter's wealth, and is she entitled to anything if the father is deceased, and is her legal share one-quarter, as it is for the father?

The aforementioned Hadith (definition) is authentic and includes both parents (mother and father). The son's wealth being for his parents means it is permissible for them to use when needed, not that they own it. The mother's share of her daughter's inheritance varies depending on the heirs: she receives one-third if the daughter has no direct descendants or a number of siblings, and one-sixth if she has descendants or siblings. However, during the daughter's lifetime, the mother's share is not fixed and is determined by her need, without causing harm to the daughter. One-fourth is not a share for either parent, except in "one of the two Gharawain cases" where the mother receives one-third of the remainder after the wife's share, which is one-fourth of the estate.