אֵלוּ מְקוֹמוֹת בָּאָדָם שֶׁאֵין מִתְטַמְּאִין בְּבַהֶרֶת. תּוֹךְ הָעַיִן וְתוֹךְ הָאֹזֶן וְתוֹךְ הַחֹטֶם וְתוֹךְ הַפֶּה וְהַקְּמָטִים שֶׁבַּבֶּטֶן וְהַקְּמָטִים שֶׁבַּצַּוָאר וְתַחַת הַדָּד וּבֵית הַשֶּׁחִי וְכַף הָרֶגֶל וְהַצִּפֹּרֶן וְהָרֹאשׁ וְהַזָּקָן שֶׁיֵּשׁ בָּהֶן שֵׂעָר וְהַשְּׁחִין וְהַמִּכְוָה הַמּוֹרְדִין. כָּל אֵלּוּ הַמְּקוֹמוֹת אֵין מִתְטַמְּאִין בִּנְגָעִים וְאֵין מִצְטָרְפִין בִּנְגָעִים. וְלֹא הַנֶּגַע פּוֹשֶׂה לְתוֹכָן. וְאֵין מִתְטַמְּאִין מִשּׁוּם מִחְיָה. וְאֵין מְעַכְּבִין אֶת הַהוֹפֵךְ כֻּלּוֹ לָבָן שֶׁנֶּאֱמַר (ויקרא יג ב) "בְעוֹר בְּשָׂרוֹ". וְכָל אֵלּוּ אֵינוֹ עוֹר גָּלוּי אֶלָּא מֵהֶן שֶׁאֵינוֹ עוֹר וּמֵהֶן שֶׁהוּא עוֹר וְהוּא מְכֻסֶּה וְאֵינוֹ גָּלוּי. וְאֹדֶם הַשְּׂפָתַיִם נִדּוֹן כְּבֵית הַסְּתָרִים וְאֵינוֹ מִטַּמֵּא בִּנְגָעִים:
These are the places in the human body which do not incur impurity because of a baheret: the inside of the eye, the inside of the ear, the inside of the nose, the inside of the mouth, the folds of the stomach, the folds of the neck, under the breasts, the armpits, the underside of the foot, a nail, the head and the chin where hair grows, and open boils and burns. All of these surfaces do not become impure because of blemishes, nor can they be combined with blemishes. A blemish cannot expand into them; they are not considered as healthy flesh in the midst of a blemish, nor does the absence of tzara'at on them prevent a person whose entire body is afflicted from being placed in that category. These concepts are derived from Leviticus 12:2 which speaks of a blemish being "on the skin of one's flesh." None of the above surfaces can be considered as revealed flesh. Some of them are not flesh and some are flesh, but they are covered and not revealed. The red portions of the lips are considered as "hidden places" and cannot incur impurity from blemishes.
