What is the ruling on maintaining ties with a relative who slanders people, seeks to cause discord among family members, and incites harm against their parents, knowing that he does not repent of his actions and that maintaining ties with him causes harm and leads to distance from Allah?

Maintaining kinship ties is obligatory, and severing them is forbidden. The wrongdoing of a relative does not negate their right to kinship ties. If a relative slanders others unjustly, it is obligatory to rebuke them. You must maintain ties with them in a way that does not cause you harm. Kinship ties are not limited to visits; they also include communication, correspondence, greetings, and anything that is customarily considered a tie.