וְכִ֤י יָמוּת֙ מִן־הַבְּהֵמָ֔ה אֲשֶׁר־הִ֥יא לָכֶ֖ם לְאָכְלָ֑ה הַנֹּגֵ֥עַ בְּנִבְלָתָ֖הּ יִטְמָ֥א עַד־הָעָֽרֶב׃
And if any beast, of which ye may eat, die, he that toucheth the carcass thereof shall be unclean until the even.
Read kabbalistic (mystical) interpretation of Leviticus 11:39: and classical mystical sources.