וּבָ֥א הַשֶּׁ֖מֶשׁ וְטָהֵ֑ר וְאַחַר֙ יֹאכַ֣ל מִן־הַקֳּדָשִׁ֔ים כִּ֥י לַחְמ֖וֹ הֽוּא׃
And when the sun is down, he shall be clean; and afterward he may eat of the holy things, because it is his bread.
Read kabbalistic (mystical) interpretation of Leviticus 22:7: and classical mystical sources.