Mishnah Negaim 2:4: How is the Nega displayed [during the examination]? The man is displayed as if he were hoeing or picking olives. A woman [is displayed] as if she were kneading dough or nursing her child, [or] like a weaver who stands [and displays] her armpit on her right arm [while weaving]. Rabbi Yehudah says: Even as if she were spinning fax by her left hand. In the way that he is displayed for [the examination of] his Nega, thus is he displayed for his shaving [after completing his purification process].

כֵּיצַד רְאִיַּת הַנֶּגַע. הָאִישׁ נִרְאֶה כְעוֹדֵר, וּכְמוֹסֵק זֵיתִים. הָאִשָּׁה כְּעוֹרֶכֶת וּכְמֵנִיקָה אֶת בְּנָהּ, כְּאוֹרֶגֶת בְּעוֹמְדִין לַשֶּׁחִי לַיָּד הַיְמָנִית. רַבִּי יְהוּדָה אוֹמֵר, אַף כְּטוֹוָה בְפִשְׁתָּן לַשְּׂמָאלִית. כְּשֵׁם שֶׁנִּרְאֶה לְנִגְעוֹ, כָּךְ הוּא נִרְאֶה לְתִגְלַחְתּוֹ:

Mishnah Negaim 2:5: A man can examine all Negaim except for his own Negaim. Rabbi Meir says: Even not the Negaim of his relatives. A man may revoke all vows except for his own vows. Rabbi Yehudah says: Even not the vows of his wife that are between her and others. A man may examine all first-born [animals to see if they have a blemish that would invalidate them as sacrifices] except for his own first-born.

כָּל הַנְּגָעִים אָדָם רוֹאֶה, חוּץ מִנִּגְעֵי עַצְמוֹ. רַבִּי מֵאִיר אוֹמֵר, אַף לֹא נִגְעֵי קְרוֹבָיו. כָּל הַנְּדָרִים אָדָם מַתִּיר, חוּץ מִנִּדְרֵי עַצְמוֹ. רַבִּי יְהוּדָה אוֹמֵר, אַף לֹא נִדְרֵי אִשְׁתּוֹ שֶׁבֵּינָהּ לְבֵין אֲחֵרִים. כָּל הַבְּכוֹרוֹת אָדָם רוֹאֶה, חוּץ מִבְּכוֹרוֹת עַצְמוֹ: