The Ruling on Being Kind to Parents After Their Death, Even If They Were Open Sinners

The question: From the Iraqi Republic, this message was sent by the listener Madi Abu Saleh al-Ayadhi. He says in his message: I have a deceased father, and my mother tells me that he used to steal people's money. Should I sacrifice animals for him, and should I pay off the debt that is owed from him, which is seven dinars? Please advise us, may Allah reward you.
The answer: The father has a great right. And if he was stealing, that is a sin. Sins do not prevent being kind to parents. So if what his mother says (that he was stealing) is true, this does not prevent sacrificing on his behalf and paying off the debt that is upon him. You will be rewarded for sacrificing on his behalf and for being kind to him through charity and supplication, even if he plundered some people. Because this is among the sins, and it does not take him out of the circle of Islam, as long as he is known for being upright in other matters, praying and affirming the oneness of Allah. But he may have committed the plundering of some wealth. This does not prevent sacrificing for him, nor does it prevent giving charity on his behalf with money, currency, or the like, nor does it prevent supplicating for him. All of this is permissible, because the deceased is supplicated for and charity is given on his behalf, even if he was an open sinner, or even if he had sins.
As for the disbeliever, no. The one known for disbelief, such as the Jew, the Christian, or the polytheist, like the one who calls upon the dead and seeks aid from the dead and makes vows to them. This person is not supplicated for when he dies, nor is a sacrifice made on his behalf, nor is charity given on his behalf. Rather, the sacrifice, charity, and supplication are for the Muslim, even if he has sins. One should be attentive to this. Yes.