What is the advice for one whose parents have died and who angered them during their lifetimes?

Question:
May Allah reward you with good. A listener sent a question, saying: Before my father and mother passed away, I did not know their rights, and I was among those who angered my father. Now that my father and mother have died, what should I do after their death? Please advise us, may Allah reward you.

Answer:
You must repent, seek forgiveness, make supplication for them, and give charity on their behalf; this is dutifulness to them. If they had debts or rights owed to people, or if one of them did, strive to settle them and pay off the debts and rights they owed to people, for this is part of dutifulness. Giving charity on their behalf, making supplication for them, and paying off the debts in their possession to the people—all of this is part of dutifulness to them after death, along with repentance and seeking forgiveness. Perhaps Allah will alleviate from you the error you committed regarding their rights.