What is the ruling concerning money paid by a grandmother to her daughter, which she considered part of the father's inheritance, or part of her brother's debt, while the grandmother is still alive?

A bequest to an heir is not permissible, based on the Prophet's (peace be upon him) saying: "Indeed, Allah has given every rightful person his due, so there is no bequest for an heir." The daughter must inform the heirs about this money so that it can be calculated as part of the estate. If the grandmother is alive, she is permitted to help her poor or indebted son from her own private wealth.