Study Niddah folio 69A with parallel Hebrew-English text, traditional commentary, and modern study tools. Free access to Babylonian Talmud online.
according to the opinion of R' Eliezer, that if they examined themselves on the first and 7th days they are considered to be pure during the intermediate days as well, what is the halakha? Do we require the first and last days of the 7, and if so, here there is an examination on the first day, and
Rav said: This case of examining on the first and 8th days is the same as that of examining on the first and 7th days, i.e., R' Eliezer requires an examination only on the first of the days, and this examination is sufficient even though there is no examination on the last of the days. And R' Ḥanina
The Talmud raises an objection to the opinion of Rav from a baraita: And the rabbis agree with regard to a zav and a zava who examined themselves on the first day and on the 8th day and found themselves to be ritually pure, that they have only the 8th day as part of their count. The Talmud asks: Who
The Talmud rejects this suggestion: No, the rabbis referred to here are R' Yehoshua and R' Akiva. Both of them agree that in this case the 1st day is not included in the count. Conversely, R' Eliezer would say that the first 7 days are included in the count and the 8th day is unnecessary, as there
§ The Talmud cites another discussion with regard to which days are included in the count of 7 clean days. Rav Sheshet says that Rav Yirmeya bar Abba says that Rav says: A menstruating woman who performed the examination marking the first step in her transition from ritual impurity to ritual purity