Hot answers tagged yoreh-deah
Presumably when we stopped concerning ourselves with the laws of purity, sometime around the year 200. Until that point I needed to know if someone was a Nida, as it would affect whether I could eat a sacrifice or the like. Since then, unless it's my wife, it's really none of my business.
The cause for the change was because in the time of the Talmud both single and married women went to the mikvah after becoming a nidda, thus it was the norm to be in that state of impurity, and had no connotation of intimacy, it simply was a process to purify oneself in order to either partake of Terumah or to enter into the Temple to bring a sacrifice, thus ...
Iyunei Deah by Rabbi Ullman. It contains a collection of investigations ('iyunim') into Hilchos Yoreh Deah based on the bechinos of Rabbi Zalman Nechemia Goldberg in Isur v'Heter (melicha, basar b'chalav, ta'arovos) and Nida.
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