Is it permissible to make an ongoing charity (sadaqah jariyah) from the husband's money on behalf of his wife's deceased father, even though the deceased has children who are capable of giving charity?

It is permissible for a woman to give charity from her husband's money, whether it is an ongoing charity (sadaqah jariyah) or other forms, on behalf of her deceased father, if she knows of her husband's consent or if he gives her permission. The reward of the charity and the supplication reaches the deceased according to the consensus of scholars. If the husband does not give permission, then it is not permissible for her to do so, based on the saying of the Prophet, peace and blessings be be upon him: "A woman should not spend anything from her husband's house except with her husband's permission." The existence of children for the deceased or their ability to give charity on his behalf does not prevent her from doing so; it is a good deed that is valid from anyone.