What are the legal shares for the mentioned heirs, and is it permissible to donate a portion of the deceased's land to build a mosque on his and his mother's behalf, and what is the reward for such an act?

If a person dies leaving behind a father, a wife, two sons, and a daughter, and no other heirs, then the father receives one-sixth, and the wife receives one-eighth. The remainder is divided among the sons and daughters, with the male receiving the share of two females. The brothers and sisters receive nothing, as they are excluded by the male son and the father. The estate is divided into 120 shares: 20 for the father, 15 for the wife, 34 for each son, and 17 for the daughter.

It is permissible to donate a portion of the inherited land on behalf of the deceased if all adult heirs agree. However, the guardian of minors is not permitted to donate their share. If the deceased's wish was a will, it is executed from one-third of the estate before its division; otherwise, the matter is up to the heirs. Matters of inheritance must be referred to the Sharia courts to verify all heirs, debts, and wills.