Composite manuscript: Hebrew letters to the Jewish court of Paris by Pinchas Michael Abdallah (Gaster Hebrew MS 1207)

And what does he answer to the words of the Master referring to a previous authority cited in the manuscript? These are his words: "The seven clean days are a rabbinic enactment, but by biblical law, aside from the established count, one must sit seven clean days only if she is a zavah gedolah a woman with a major issue of blood," etc. And with all this, regarding the explanation of the laws, he wrote: "The Sages received, as a Halakhah le-Moshe mi-Sinai a law given to Moses at Sinai, that after ten days—following seven days of niddah menstruation—if she saw blood during those eleven days, she is called a zavah a woman with an irregular discharge. And afterwards, she returns to being called a niddah, and so on forever: seven days of niddah and seven days of zavah," etc.

The author says: What fool would believe such a thing and say that this law was taught to Moses at Sinai and transmitted to the Sages, while other scriptural verses were nullified? They have turned Moses into a lying prophet, a false prophet, and his Torah into a forgery. How can it be that while Moses was still at Sinai with all of Israel, he taught them laws contrary to the Torah of the Lord that He gave them? And it is written in the aforementioned passage—by way of the verse—"And if a woman has an issue of her blood many days not at the time of her impurity, or if she has an issue beyond the time of her impurity, all the days of the issue of her uncleanness shall be as the days of her impurity; she shall be unclean."

And behold, the beginning of this scripture speaks of a sick woman, and this is what is stated explicitly in his own words: "And if a woman has an issue of her blood many days not at the time of her impurity," etc. He means that she is ill and does not have a regular period like other women who have a regular, customary period. And as for what is written, "or if she has an issue beyond the time of her impurity," etc., he means a woman who has a chronic period at a fixed time, and this illness comes to her at its time. This shall be called in scripture niddah menstruation original: "and it is called, meaning 'on the time of her impurity'". And if she saw blood two, three, or five times or more, the scripture concludes, "her bed... [shall be] according to its types," whether she is ill or not, "all the days of the issue of her uncleanness shall be as the days of her impurity; she shall be unclean."