Is it permissible to sever ties with a wicked maternal uncle who harms the family and causes divisions within it, after attempts to reform him and despair of his behavior changing?

If a maternal uncle is characterized by reprehensible morals and forbidden acts, it does not justify describing him as being in the same category as Iblis (Satan), because that is an accusation of disbelief against him. The Prophet, peace and blessings be upon him, said: "No man accuses another man of open wickedness, or accuses him of disbelief, but it will return to him if the person is not as he described." Moreover, these misdeeds do not prevent maintaining ties with him nor do they justify severing them, unless there is a benefit in boycotting him, such as that boycott leading him back to the truth, or if maintaining ties with him entails a definite religious or worldly harm. One should maintain ties with the maternal uncle in a way that does not cause harm to oneself. Among the greatest forms of maintaining ties with him are advising him kindly, admonishing him, reminding him, and supplicating for his guidance.