וְ֠אִישׁ אֲשֶׁר־יִשְׁכַּ֨ב אֶת־אִשָּׁ֜ה דָּוָ֗ה וְגִלָּ֤ה אֶת־עֶרְוָתָהּ֙ אֶת־מְקֹרָ֣הּ הֶֽעֱרָ֔ה וְהִ֕יא גִּלְּתָ֖ה אֶת־מְק֣וֹר דָּמֶ֑יהָ וְנִכְרְת֥וּ שְׁנֵיהֶ֖ם מִקֶּ֥רֶב עַמָּֽם׃
Si un homme cohabite avec une femme qui souffre du flux, et découvre sa nudité, Il a mis à nu la source de son sang, et elle-même a dévoilé cette source; lis seront retranchés, tous deux, du sein de leur peuple.
Sha'arei Kedusha
Relations with a menstruating woman, is punished with excision (Karet).645Leviticus 18:19; Leviticus 20:18; Mishneh Torah, Hilchot Issurei Biyah, Ch. 1, Ch. 4 Aside for that, it states in Zohar,646Zohar II 3a-b “There are three types of people who push the Indwelling Presence of HaShem-יהו״ה, blessed is He (the Shechinah) from the world. When such people cry out in prayer, their voices are not heard. These are them: One who has relations with a menstruating woman, for there is no greater impurity in the world than the impurity of relations with a menstruating woman.”