Is it permissible for a father to register all his property to one of his children to the exclusion of the others, and is he sinful for doing so, even if they are disobedient, or if he disposes of all of it for charitable causes to deprive them? And is there a reward for charity given from suspicious wealth obtained through injustice, or is it merely the reward for getting rid of ill-gotten gains?

If a father bequeaths money to his son after his death, this is a forbidden bequest that is impermissible unless all adult, sane heirs approve it, due to the Prophet's (peace be upon him) saying: "There is no bequest for an heir."

If it was an immediate gift and the son took possession of it during his father's lifetime, the predominant opinion is that it is obligatory to equalize among the children and not prefer some over others, even if it is due to piety or disobedience.

It is not permissible for a father to gift his money with the intention of depriving his children of inheritance; he is sinful for this intention.

If the son coerced his father into giving the gift, the money is unlawful for him, and no one should accept this money from him if they know its situation, because it is usurped money that must be returned to its owner.

Unlawful money should not be given in charity; rather, it should be spent on public welfare to dispose of it. As for money that is questionable, it is permissible to give it in charity.