Ruling on severing ties with a harmful relative after advising him

Question:
If a Muslim, who is your brother in Allah or your relative, constantly attacks you, curses you, and accuses you of wrongdoing without reason, and every time you cut ties with him and then resume contact, he repeats this behavior, should you continue to cut ties with him if kindness does not benefit him?

Answer:
If advising him is feasible, that is preferable; advise him so that perhaps Allah will guide him. If contact with him leads to evil, do not contact him, and praise be to Allah. If he is a vile, open sinner who does not care and for whom advice is of no use, cut ties with him, praise be to Allah. The least of his states is a recommended practice (sunnah).
Q: And it is not considered holding a grudge?
The Shaykh: No, no, there is nothing wrong with it; he is the wrongdoer.