What is the ruling on financial maintenance from a father who deals with the bank in suspicious matters?

Question:
May Allah forgive you, Honorable Shaykh. This is Salim. He says: My father deals with the bank in suspicious matters that I do not know about, because he hides them from us. He is the sole provider for this family. Yes, indeed. He says: My father deals with the bank in suppressed matters that I do not know about, because he hides them from us, and he is the sole provider for this family. We have told him that this is forbidden, but he continues to do it. The question is: Do we boycott him? And what is our position regarding living with him?

Answer:
In any case, if you know that the money he spends on you is riba (usury or interest), this is forbidden, and it is not permissible for you to accept it if you have what suffices you. If you have what suffices you, it is not permissible for you to eat from money you know is riba. If you do not have what suffices you, and you are forced to stay with him and for him to provide for you, then the sin is upon him, until Allah provides you with a way out so that you can become independent and no longer rely on him.