Numbers 31:28 Kabbalah

וַהֲרֵמֹתָ֨ מֶ֜כֶס לַֽיהוָ֗ה מֵאֵ֞ת אַנְשֵׁ֤י הַמִּלְחָמָה֙ הַיֹּצְאִ֣ים לַצָּבָ֔א אֶחָ֣ד נֶ֔פֶשׁ מֵחֲמֵ֖שׁ הַמֵּא֑וֹת מִן־הָאָדָם֙ וּמִן־הַבָּקָ֔ר וּמִן־הַחֲמֹרִ֖ים וּמִן־הַצֹּֽאן׃

and levy a tribute unto the LORD of the men of war that went out to battle: one soul of five hundred, both of the persons, and of the beeves, and of the asses, and of the flocks;

Read kabbalistic (mystical) interpretation of Numbers 31:28: and classical mystical sources.