The חֵטְא to Hate - פרשת קדושים - לֹא תִשְׂנָא אֶת אָחִיךָ בִּלְבָבֶךָ

See source here We discuss the interpretation of a verse from Leviticus regarding not hating another in one's heart and the commandment to rebuke one's neighbor. Several commentators explain that hiding hatred in the heart is a severe transgression, and the appropriate response to a neighbor's transgression is rebuke. However, they emphasize that this rebuke must be delivered properly, specifically not in public or in a way that shames the other person, unless they are persistently wicked and refuse to accept the rebuke. The sources also connect this concept to the idea of mutual responsibility within the community and highlight that baseless hatred is a significant sin.