Is it obligatory to return the money from charity and Udhiyah that was spent from the funds of a mother afflicted with Alzheimer's, after the approval of all heirs, knowing that the mother was not in need of these funds, and that the heirs are unable to repay these large sums?

An Alzheimer's patient is placed under interdiction, and either the judge or one of his trustworthy children takes charge of managing his wealth. It is not permissible for him to give charity from his money. Guardianship (wilaya) is revoked by insanity, and senility is akin to it. Therefore, the former agent is not entitled to manage his mother's money after she is afflicted with Alzheimer's. Disposing of the patient's money without proper guardianship or valid agency is considered guaranteed (i.e., must be repaid), unless it is done by a guardian; as some jurists permit the guardian and custodian to offer a sacrifice on behalf of the child and the insane person from their own money. Giving charity from the patient's money as a voluntary act is not permissible, and the amount given in charity must be guaranteed, with the guarantee being binding on the one who gave the charity.