וְכִ֤י יֻתַּן־מַ֙יִם֙ עַל־זֶ֔רַע וְנָפַ֥ל מִנִּבְלָתָ֖ם עָלָ֑יו טָמֵ֥א ה֖וּא לָכֶֽם׃ (ס)
But if water be put upon the seed, and aught of their carcass fall thereon, it is unclean unto you.
Read kabbalistic (mystical) interpretation of Leviticus 11:38: and classical mystical sources.