Is it permissible for the children of a son who died during his father's lifetime to inherit their father's share from their grandfather, especially if these children possess wealth and property? And is it permissible to divide the father's (grandfather's) assets by allocating lands to the male children and only one house to the three daughters?

Grandchildren do not inherit from their grandfather if their paternal uncles are alive. However, a will in their favor is valid, provided it does not exceed one-third of the estate after debt settlement, and it is unrelated to their father's inheritance. As for what the father mentioned about distributing his properties before his death, if these were complete gifts during his lifetime, they are valid subject to their conditions. If they were incomplete gifts (a bequest to an heir), they are not permissible unless the heirs approve them. If the heirs do not approve, all that the father left behind shall be divided among them according to the Sharia distribution: "to the male, the equivalent of the share of two females."