The sefer Taharas HaBayis is R' Ovadia Yosef's comprehensive compendium on hilchos Niddah. It is 3 volumes, with a lot to say about everything, as one would expect from R' Ovadia.

However, there is a serious dearth of material regarding the calculation of vestos. The index in the back has no entries for maseches Niddah 62a - 64b (the primary location of these topics), and a mere 4 or 5 entries for Yoreh De'ah Siman 189, the primary siman in Shulchan Aruch discussing this topic.

Is there any reason that R' Ovadia has such a lack of content on these topics? Does he discuss anywhere why he would direct less attention to it?

(For comparison, Badei HaShulchan has 356 se'ifim and 382 tziyunim, aside from his more in-depth biurim, on Siman 189.)

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    @DoubleAA He spends pages and pages on רואה מחמת תשמיש, which countless Rabbonim have testified virtually never happens. And he spent two pages on vestos, which has a nafka mina for every single time a married woman has a period. Was that a joke? Jun 10, 2015 at 21:10
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    Roah Machmat Tashmish, be it extremely rare, is EXTREMELY high risk. Like on the level of Aguna. It is incredibly important to elaborate on every possible kula in that field. Vestot Kevuot, while perhaps not that rare, aren't nearly as big a deal. Vestot are probably Derabanan after all. And the real unusual situations are even rarer and resolve themselves quickly.
    – Double AA
    Jun 10, 2015 at 21:17
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    @DoubleAA I am still not sure if you are pulling my leg. He wrote a 3 volume work on every detail of hilchos Niddah and he just skipped vestos because it's "probably Derabanan"?!?!? He didn't take that approach with kesamim, I'll tell you that much. Jun 10, 2015 at 21:19
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    @DoubleAA Before I respond, can you please tell me if "or is that too superficial" was a sarcastic quip or you have a legitimate reason to suspect that I may have considered it superficial? Nov 15, 2015 at 20:32
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    According to an anonymous rabbi quoted in this answer, "Rav Ovadia wrote about vestot for his sefer Taharat HaBayit ... but the chapters were lost before they could be published, and Rav Ovadia never rewrote them."
    – Joel K
    Aug 27, 2019 at 13:17

1 Answer 1


I am not well aquatinted with this compendium, but I beheld that in the start of chapter three which is entitled "Laws of Checkings", he quickly outlines the paradigm of a period.

This is the concluding sentence of the paragraph:

ויש עוד סוגי וסתות שונים ויתבארו בסימן אחר

There are other period paradigms which will be discussed in a later chapter.

The printers in the 2018 edition added the following footnote:

כך עלתה במחשבה לפני רבינו, ולא זכינו לאורו

This was our teacher's idea, but we never merited to it's illumination.

The author himself restates this in the commentary on this paragraph:

עיין בטור שולחן ערוך (ריש סימן קפט). ויתבאר עוד בעזה"י

This may corroborate Joel K's insights.

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