כֵּ֗ן הַ֭בָּא אֶל־אֵ֣שֶׁת רֵעֵ֑הוּ לֹ֥א יִ֝נָּקֶ֗ה כָּֽל־הַנֹּגֵ֥עַ בָּֽהּ׃
So he that goeth in to his neighbour’s wife; Whosoever toucheth her shall not go unpunished.
Read kabbalistic (mystical) interpretation of Proverbs 6:29: and classical mystical sources.