Advice for one who was undutiful to his parents after his repentance

Question:
He says: Honorable Shaykh, may Allah grant you success. The questioner says: I was severely undutiful to my father, and my father cursed me. What do you advise me to do regarding being dutiful to him? May Allah grant you success.

Answer:
First, if your father is alive, know that the door of repentance is open, and praise be to Allah. You should repent to Allah the Exalted. Second, if both your parents are present, or if one of them is present, you must ask for his forgiveness; you must ask for his forgiveness and for him to pardon you for what you did. Third, you must be dutiful to them after that; you must be dutiful to them after that. If both are dead, or if one of them is dead, you must make du'a for him, seek forgiveness for him, and give much charity on his behalf. If he has debts, you must pay them off on his behalf. This is part of being dutiful to him after his death. Yes.