Is it permissible for a father to make a will for his divorced daughter to pay an installment of his pension to the electricity company after his death, knowing that the value of the installment is a quarter of the pension, and is it valid for his daughter to refuse that despite her knowledge of her siblings' financial circumstances?

The question concerns an electricity bill that the father recommended be paid after his death. This bill is considered a debt owed by the father, and it must be paid from the inheritance before its distribution among the heirs, whether the father recommended it or not. For a debt is settled from the inheritance and takes precedence over the rights of the heirs. The father is advised to revoke the will if it is for an heir.