Lev레 Leviticus레위기, chapter장 Book of Leviticus레위기, chapter장 20

And if an ish shall lie with an isha during her davah (menstruous unwellness), and shall uncover her nakedness, he hath made bare her mekor (source), and she hath uncovered the source of her dahm; and both of them shall be cut off from among their people.