את כל שערו כלל ופרט וכלל להביא כל מקום כנוס שער הנראה לשון רש"י (רש"י על ויקרא י״ד:ט׳) אבל בת"כ (פרק ב ב ג) וגלח את שערו יכול אף בית הסתרים תלמוד לומר גבות עיניו מה גבות עיניו בנראה אף כל שערו בנראה פרט לבית הסתרים אי מה גבות עיניו מקום כנוס שער בנראה אף כל מקום כנוס שער בנראה מנין כנוס שער בשאינו נראה פזר שער בשאינו נראה ת"ל את כל שערו יגלח אבל הרב תפס מדרשו של רבי ישמעאל מאי הביא שער הרגלים ומאי הוציא דבית השחי ודכולי גופיה אבל בכאן הלכה מגלח כדלעת או מפני שהלכה עוקבת את המדרש או מפני שהלכה כדברי רבי עקיבא ורבי דכולי גופיה ומיעט שבתוך החוטם בלבד וכן שנינו במשנתנו (נגעים פי"ד מ"ב) והעביר תער על כל בשרו ומפורש בפרק שני דסוטה (טז): AND IT SHALL BE ON THE SEVENTH DAY, THAT HE SHALL SHAVE ALL HIS HAIR, HIS HEAD AND HIS BEARD AND HIS EYEBROWS, EVEN ALL HIS HAIR HE SHALL SHAVE OFF. “This is a general principle [he shall shave all his head] followed by an enumeration of particulars [already comprehended in the general proposition, i.e., his head etc.] and [this again is followed by] a generalization [all his hair he shall shave off].64Such a Scriptural statement is governed by the rule enunciated by Rabbi Yishmael [in his “Thirteen exegetical principles by which the Torah is expounded”], that the generalizations can include only such new particulars as are similar to those particulars specified. In the verse they therefore include etc. This is to include every spot of the body where there is a visible collection of hair” [just like the head, beard and eyebrows]. This is Rashi’s language.
But in the Torath Kohanim it is stated:65Torath Kohanim, Metzora 2:2-3. Ramban’s meaning is to point out that Rashi here follows Rabbi Yishmael’s method of exposition, while the accepted rule is that of Rabbi Akiba, who had a different method of exegesis which allowed in such cases for a wider inclusion of particulars not specified, as indicated in the following text of the Torath Kohanim. See my Hebrew commentary, p. 80. “And he shall shave off all his hair. I might think this includes the hidden parts of the body; Scripture therefore states, his eyebrows. Just as the eyebrows are visible, so also [the expression] all his hair refers only to visible parts of the body, thus excluding hair which is in the hidden parts of the body. If so I might think, just as the eyebrows are in a place where there is a visible collection of hair, so we are to include [only] those places where there is a visible collection of hair. Whence do I know to include [in the commandment of shaving his hair] an invisible collection of hair [such as under the armpits, and between the legs], or a visible scattering of hair [such as on the stomach or ribs] or an invisible scattering of hair [such as the hair in the folds of the body]? Scripture therefore says, even all his hair he shall shave off.” However, the Rabbi [Rashi] followed the interpretation of Rabbi Yishmael,64Such a Scriptural statement is governed by the rule enunciated by Rabbi Yishmael [in his “Thirteen exegetical principles by which the Torah is expounded”], that the generalizations can include only such new particulars as are similar to those particulars specified. In the verse they therefore include etc. who included only the hair between the legs, and excluded the hair under the armpits and on the whole body [since they are not “visible collections of hair].” But here the accepted law is that he shaves his body as smooth as a gourd, either because this is one [of the three instances] where the practice goes beyond the Biblical text,66Sotah 16 a. or because the accepted law is like the opinion of Rabbi Akiba, who [as a consequence of his wider method of exegesis] included the hair of the whole body [in the requirement of being shaved], and excluded only the hair within the nose [or ears]. So also have we been taught in a Mishnah [like Rabbi Akiba]:67Negaim 14:2. “He passed the razor over the whole of his body,” and it is further explained in the second chapter of Tractate Sotah.66Sotah 16 a.