What is the ruling on bequeathing the entire estate if it is specified for the son to disinherit the daughters?

The Shaykh : He says: A man bequeathed his estate to his son to disinherit, or what? A man bequeathed his estate to his son to disinherit his daughters from inheritance. Is this so? And this son wants to give his sisters their right, but he does not know whether to give them from the original money or to give them the money? I say: May Allah reward you. This bequest is invalid and forbidden, and it is not acted upon. He returns what his father bequeathed to him; he returns it to the estate, and it is divided according to the shares prescribed by Allah. For Allah, when He mentioned inheritance, said: All of it is returned; it is returned to the estate and divided according to inheritance. Yes.