נדה ח׳Niddah 8

Mishnah 1א׳

הָרוֹאָה כֶתֶם עַל בְּשָׂרָהּ כְּנֶגֶד בֵּית הַתֻּרְפָּה טְמֵאָה. וְשֶׁלֹּא כְנֶגֶד בֵּית הַתֻּרְפָּה, טְהוֹרָה. עַל עֲקֵבָהּ וְעַל רֹאשׁ גּוּדָלָהּ, טְמֵאָה. עַל שׁוֹקָהּ וְעַל פַּרְסוֹתֶיהָ, מִבִּפְנִים, טְמֵאָה. מִבַּחוּץ, טְהוֹרָה. וְעַל הַצְּדָדִין מִכָּאן וּמִכָּאן, טְהוֹרָה. רָאֲתָה עַל חֲלוּקָהּ, מִן הַחֲגוֹר וּלְמַטָּה, טְמֵאָה. מִן הַחֲגוֹר וּלְמַעְלָה, טְהוֹרָה. רָאֲתָה עַל בֵּית יָד שֶׁל חָלוּק, אִם מַגִּיעַ כְּנֶגֶד בֵּית הַתֻּרְפָּה, טְמֵאָה. וְאִם לָאו, טְהוֹרָה. הָיְתָה פוֹשַׁטְתּוֹ וּמִתְכַּסָּה בוֹ בַּלַּיְלָה, כָּל מָקוֹם שֶׁנִּמְצָא בוֹ כֶתֶם, טְמֵאָה, מִפְּנֵי שֶׁהוּא חוֹזֵר. וְכֵן בַּפַּלְיוֹם:

Regarding a woman who saw a [blood] stain on her body, if it was opposite her genital area she is impure; and if it was not opposite her genital area she is pure. If it was on her heel or on the tip of her big toe, she is impure. Regarding if it was on her thigh or on her feet, if on the inner side she is impure; and if on the outer side she is pure; and if on the sides, this side or that [i.e. the front or he back], she is pure. If she saw [a bloodstain] on her robe, if it was from the belt or below she is impure; from the belt or above, she is pure. If she saw it on the sleeve of the robe, if it reaches to opposite her genital area she is impure; and if it does not she is pure. If she would take it off and cover herself with it at night, if she finds a stain anywhere she is impure, because it rotates. And similarly regarding headscarves [which she covers her hair with at night, she is impure if she finds a stain anywhere on them, since they move around at night].

Mishnah 2ב׳

וְתוֹלָה בְכָל דָּבָר שֶׁהִיא יְכוֹלָה לִתְלוֹת. שָׁחֲטָה בְהֵמָה, חַיָּה וָעוֹף, נִתְעַסְּקָה בִכְתָמִים אוֹ שֶׁיָּשְׁבָה בְצַד הָעֲסוּקִים בָּהֶן, הָרְגָה מַאֲכֹלֶת, הֲרֵי זוֹ תּוֹלָה בָהּ. עַד כַּמָּה הִיא תוֹלָה. רַבִּי חֲנִינָא בֶן אַנְטִיגְנוֹס אוֹמֵר, עַד כַּגְּרִיס שֶׁל פּוֹל, וְאַף עַל פִּי שֶׁלֹּא הָרְגָה. וְתוֹלָה בִבְנָהּ אוֹ בְּבַעְלָהּ. אִם יֶשׁ בָּהּ מַכָּה וְהִיא יְכוֹלָה לְהִגָּלַע וּלְהוֹצִיא דָם, הֲרֵי זוֹ תּוֹלָה בָהּ:

A woman [who found a stain] may attribute it to any cause to which she is able to attribute it: [for instance] if she had slaughtered a beast, or a wild animal or a fowl, or if she was handling [blood] stains, or if she sat beside those who were handling them. If she killed a louse she may attribute [the bloodstain] to it. Up to how large a stain may be attributed [to a louse]? Rabbi Chanina ben Antignos says: up to the size of a split bean, and even if she did not kill it. And she may attribute it to her son or to her husband [i.e. if one of them has a wound]. If she has a wound that could open and produce blood she may attribute [the bloodstain] to it.