He opposes his father and angers him because his father goes out with the people of innovation

Question:
He says: Honorable Shaykh, may Allah grant you success. He says: If my father walks with a group of innovators, and I oppose him and do not walk with him, and because of this disagreement he is not pleased with me and becomes angry with me, is this undutifulness to parents? And what is obligatory for me regarding what I gave him?

Answer:
toward his father, even if he were a disbeliever, you are to be good to him, you spend on him if he needs it, you treat him with what is known in this world, even if he is a disbeliever, you treat him with what is known in this world, but you do not obey them in disobedience to Allah. As for financial maintenance, it is obligatory for you if he needs it, even if he is a disbeliever, so how much more so for a Muslim who is an open sinner? If the Muslim father is an open sinner, the obligation of spending and being good to him does not drop from his son. But along with this, he calls him to Allah, clarifies things to him, and advises him. Yes.