What is the ruling of Islamic law regarding a father who disinherits his son for a simple reason and gives the inheritance to his other son, and what is the ruling on the the son who accepts that?

The father must repent to Allah and tear up the will that disinherits one of his sons, for the Prophet, peace and blessings be upon him, said: "Indeed, Allah has given every rightful person his due, so there is no will for an heir." The son designated in the will must reject it and not cooperate with his father on it, for Allah, the Most High, says: "And cooperate in righteousness and piety, but do not cooperate in sin and aggression." As for the son disinherited from the inheritance, he should be dutiful to his father and avoid angering him, unless it involves something forbidden. If the gift was made during the father's lifetime, it is a donation (hiba) whose rulings differ from those of a will.