The obligation toward the one who insults his parents and others

Question:
Following this, a message was received by the program from one of the female listeners, who indicated her name with the letters (H. 'A) from Riyadh. Our sister says: I have a brother who is my eldest sibling, and I ask Allah to guide him. He frequently curses, swears at, and pronounces curses, may Allah protect us from that, to the point that his children have followed his path, and there is no power nor strength except with Allah. But if only he had stopped at that; rather, he curses, pronounces curses, and swears at his parents, does not respect them, and pays no attention to them. Then she asks Your Eminence, saying: How should I deal with him? Should I boycott him and stop visiting him, especially since he became angry with me when I advised him?
May Allah reward you with good.

Answer:
This is a great evil that he has committed, may Allah protect us from it. The obligatory duty is to advise him, urge him to repent, return to Allah, and feel remorse for what he has done, and to guard his tongue from this cursing, whether with his parents or with others. This is the obligatory duty: that you advise him, and that his parents and others advise him. He must be advised and directed toward good. His parents have the right to take his case to the committee or to the court so that he is disciplined, because he has committed a great evil. You and your other sisters should boycott him if advice does not benefit him. If you boycott him, that is good, because he has committed a great evil; so boycotting him is among the most important matters and among the best of acts of devotion, in the hope that he will be affected by it. Yes.

The presenter: May Allah reward you with good, and may He do you good.