Is the will of the deceased who has no children valid if it stipulates a third of his estate to his wife, another third as ongoing charity (Sadaqah Jariyah), and the remainder to his relatives?

Bequesting a third of the estate to the wife (who is an heir) is religiously forbidden and is not effective unless the other heirs consent. However, bequeathing another third as an ongoing charity (Sadaqah Jariyah) is valid and effective, even if the heirs do not consent.