כָּל־הַמִּשְׁכָּ֞ב אֲשֶׁר־תִּשְׁכַּ֤ב עָלָיו֙ כָּל־יְמֵ֣י זוֹבָ֔הּ כְּמִשְׁכַּ֥ב נִדָּתָ֖הּ יִֽהְיֶה־לָּ֑הּ וְכָֽל־הַכְּלִי֙ אֲשֶׁ֣ר תֵּשֵׁ֣ב עָלָ֔יו טָמֵ֣א יִהְיֶ֔ה כְּטֻמְאַ֖ת נִדָּתָֽהּ׃
Каждая постель, на которой она будет лежать все дни своей жизни, должна быть для нее постелью ее нечистоты; и все, на чем она сидит, будет нечисто, как нечистота нечистоты ее.
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.”