וְהִשְׁקָה֙ אֶת־הָ֣אִשָּׁ֔ה אֶת־מֵ֥י הַמָּרִ֖ים הַמְאָֽרֲרִ֑ים וּבָ֥אוּ בָ֛הּ הַמַּ֥יִם הַֽמְאָרֲרִ֖ים לְמָרִֽים׃
et il fera boire à la femme les eaux amères de la malédiction, afin que ces eaux de malédiction portent dans son sein l’amertume.
Mishnah Sotah
Just as the water checks her so the water checks him, as it is said, “And shall enter”, “And shall enter” (Numbers 5:22,. Just as she is prohibited to the husband so is she prohibited to the lover, as it is said, “defiled … and is defiled” (Numbers 5:27,, the words of Rabbi Akiba. Rabbi Joshua said: thus Zechariah ben Hakatzav used to expound. Rabbi says: twice in the portion, “If she is defiled…defiled”--one referring [to her being prohibited] to the husband and the other to the paramour.