קַ֧ח אֶת־הָאֵז֛וֹר אֲשֶׁ֥ר קָנִ֖יתָ אֲשֶׁ֣ר עַל־מָתְנֶ֑יךָ וְקוּם֙ לֵ֣ךְ פְּרָ֔תָה וְטָמְנֵ֥הוּ שָׁ֖ם בִּנְקִ֥יק הַסָּֽלַע׃
’Take the girdle that thou hast gotten, which is upon thy loins, and arise, go to Perath, and hide it there in a cleft of the rock.’
Read kabbalistic (mystical) interpretation of Jeremiah 13:4: and classical mystical sources.