While learning Massechet Negaim I came across a fascinating Pirush Hamishna. There are different types of Negaim – skin abnormalities – that can cause Tume’ah and each has its peculiar rules. A Nega (Baheret) that appears within a wound or a burn becomes Tameh if after a week of segregation, it expands within the wound or if it grows a white hair. If it remains stationary and does not grow a white hair the person is sent home and is Tahor. Furthermore, the expansion must be within the wound. If it expands outside the wound into healthy skin, it does not count. The Mishna 9:3 posits a situation where there is a wound and a Nega within it, covering completely the wound both as large as a sela, located in the palm of a hand. Hair does not grow nor can expansion matter as it would have to be outside the wound as the Nega covers the whole wound. At first blush, it would seem that this kind of Nega could not ever become Tameh. Rabbi Eliezer was asked what the Halacha would be in such a case. To segregate the person for a week to see if any change may occur does not seem to be practical as there apparently is no possibility of Tume’ah. He answered that you do segregate that person for observation. At their surprise, he explained that it is possible that after a week, the Nega would shrink and the person would be sent home and a few days later the Nega would increase in size. Such a case makes the person a definite Tameh (Vaykra 8:35-36). They then asked him what if the wound and the Nega were exactly a Griss (a smaller size, the minimum size of a Nega) in which case shrinking would mean no Nega at all. A further enlargement back to a Griss would be seen as a new Nega and keep the person in limbo without ever becoming a definite Tameh. And here things become interesting –
אמרו לו, והלוא מקומה כגריס. אמר להן, לא שמעתי.
They said to him [Rabbi Eliezer] what if its size is a Griss? He answered I did not hear.
A little background is needed here. Rabbi Eliezer was the greatest pupil of Rabbi Yochanan Ben Zakai, the leader of the Sanhedrin during the destruction of the second temple. RE was a survivor of the war and took part in the immense effort organized by RYBZ to collect and organize the whole Masorah of Torah up to their time. They foresaw the spiritual upheavals facing the nation and worked to protect our spiritual heritage. RE had a brilliant memory and never forgot anything (Avot 2:8). He also claimed that he never said anything that he did not hear from his teachers. (Much has been written about the meaning of this statement see Rav Reuven Margulies in his Olelot and recently Professor Gilat published a book on R. Eliezer where he addresses the issue). His answer here therefore is quite meaningful.
אמר לו רבי יהודה בן בתירה, אלמד בו. אמר לו, אם לקיים דברי חכמים, הין.
Rabbi Yehudah Ben Beteira offers “Alamed” [to use logical and exegetical tools] to deduce the Halacha for this case. RE responds that if it will support the Chachamim yes, go ahead.
Rambam in his Pirush Hamishnah comments – (my translation/paraphrase)
When RE said I did not hear, he meant that he did not hear a good reason why the person in this case should be segregated. When RYBB suggested that he would give a reason, he told him that if, his reasoning will support segregation and explain the logic for it, to go ahead. However, should he reinforce the question and give more reasons why he should not be segregated, RE did not want to hear it. RE had a kabala that in this case the person has to be segregated but did not know what could happen at the end of the segregation for a conclusive Tume’ah to be decided.
Not being able to think of a reason why a Halacha should be so is not enough to reverse a Mesora of a Halacha. I am not sure to what category of kabala this belongs to, whether the Pirushim Hamekubalim from Sinai or some later Takanah or Gezeirah. The reason I place this Halacha in one of these two categories and not as a precedent decided by an earlier Sanhedrin based on the hermeneutic rules of logic, because those can be reversed by later Sanhedrin. In any case, this gives us a clearer picture of what RE meant when he said he would not say things that he did not learn from his teachers. He meant that he would not second-guess an authentic Mesora and even if he could not figure out the reasoning and come up with a plausible application, he would not amend it. In fact, RYBB came up with a possibility that made sense of the Halacha.
אמר לו, שמא ייוולד לו שחין אחר חוצה לו, ויפסה לתוכו. אמר לו, חכם גדול אתה, שקיימת דברי חכמים
RYBB pointed out that it is possible for the segregated Nega to expand beyond the wound it was covering to an adjoining one that may spring up during the segregation period. That would satisfy the requirement of expansion within a wound as opposed to healthy skin. I am not sure, why this was so far fetched that Rabbi Eliezer could not come up with it, but be it as it may, it is an interesting insight into his thinking. It is also notable, the effusive praise RE gave RYBB for coming up with this possibility, calling him Chacham Gadol.
Shabbat Shalom.
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