וְהֵבִ֤יא אֶת־אֲשָׁמוֹ֙ לַֽיהוָ֔ה אֶל־פֶּ֖תַח אֹ֣הֶל מוֹעֵ֑ד אֵ֖יל אָשָֽׁם׃
And he shall bring his forfeit unto the LORD, unto the door of the tent of meeting, even a ram for a guilt-offering.
Read kabbalistic (mystical) interpretation of Leviticus 19:21: and classical mystical sources.