וַיֹּ֤אמֶר יְהוָה֙ אֶל־מֹשֶׁ֔ה אֱמֹ֥ר אֶל־הַכֹּהֲנִ֖ים בְּנֵ֣י אַהֲרֹ֑ן וְאָמַרְתָּ֣ אֲלֵהֶ֔ם לְנֶ֥פֶשׁ לֹֽא־יִטַּמָּ֖א בְּעַמָּֽיו׃
I rzekł Wiekuisty do Mojżesza: "Oświadcz kapłanom, synom Ahrona i powiedz im: przy osobie zmarłej niechaj nikt z nich się nie zanieczyści w pośród współplemieńców swoich.
Zohar
AND THE LORD SAID UNTO MOSES, SPEAK UNTO THE PRIESTS THE SONS OF AARON AND SAY UNTO THEM, THERE SHALL NONE DEFILE HIMSELF FOR THE DEAD AMONG HIS PEOPLE. R. Jose said: ‘What is the connection of this with the verse that immediately precedes, “A man also or a woman that hath a familiar spirit or that is a wizard shall be put to death” (Lev. 20, 27)? It is this: that having admonished the Israelites to sanctify themselves, the Scripture now admonishes the priests to sanctify themselves specially. Later, too, it admonishes the Levites (Num. 18, 21 et seq.), so that all should become holy and pure.