Leviticus 13:53 Kabbalah

וְאִם֮ יִרְאֶ֣ה הַכֹּהֵן֒ וְהִנֵּה֙ לֹא־פָשָׂ֣ה הַנֶּ֔גַע בַּבֶּ֕גֶד א֥וֹ בַשְּׁתִ֖י א֣וֹ בָעֵ֑רֶב א֖וֹ בְּכָל־כְּלִי־עֽוֹר׃

And if the priest shall look, and, behold, the plague be not spread in the garment, or in the warp, or in the woof, or in any thing of skin;

Read kabbalistic (mystical) interpretation of Leviticus 13:53: and classical mystical sources.