כָּל־הַמִּשְׁכָּ֞ב אֲשֶׁר־תִּשְׁכַּ֤ב עָלָיו֙ כָּל־יְמֵ֣י זוֹבָ֔הּ כְּמִשְׁכַּ֥ב נִדָּתָ֖הּ יִֽהְיֶה־לָּ֑הּ וְכָֽל־הַכְּלִי֙ אֲשֶׁ֣ר תֵּשֵׁ֣ב עָלָ֔יו טָמֵ֣א יִהְיֶ֔ה כְּטֻמְאַ֖ת נִדָּתָֽהּ׃
Toda cama sobre a qual ela se deitar durante todos os dias de seu fluxo será para ela como a cama de sua menstruação, e todo utensílio sobre o qual ela se sentar será impuro, como a impureza de sua menstruação.
Bartenura
But if a man has relations with a woman that awaits a day corresponding to a day he is exempt – The gemara answers that she who keeps a day for each day, as it is written in the Torah (Leviticus 15) “she shall count for herself” comes to teach that she counts one day for each day [of bleeding], and if something is written in the Torah the beit din does not bring a sacrifice. The Gemara explains, for example, that they are talking about a zava, which is only a case during the day, i.e., when she sees blood during the day and not when she sees at night, as it is written there, “all the days of her issue.”