Shabbat 64b
שבת ס״ד ב — ד"ה מַתְנִי׳ יוֹצְאָה אִשָּׁה בְּחוּטֵי שֵׂעָר
Shabbat 64b:3
A woman may go out on Shabbat wearing strands of hair placed on her head, whether made from her own hair, another person's hair, or animal hair; the mishna teaches all three cases to clarify that even hair from another person (which might seem repulsive and cause her to remove it) is permitted, since the law does not prohibit it on grounds of concern she will carry it in the public domain.
מַתְנִי׳ יוֹצְאָה אִשָּׁה בְּחוּטֵי שֵׂעָר, בֵּין מִשֶּׁלָּהּ בֵּין מִשֶּׁל חֲבֶירְתָּהּ בֵּין מִשֶּׁל בְּהֵמָה. גְּמָ׳ וּצְרִיכָא, דְּאִי אַשְׁמְעִינַן דִּידַהּ מִשּׁוּם דְּלָא מְאִיס, אֲבָל חֲבֶירְתַּהּ דִּמְאִיס — אֵימָא לָא.
MISHNA: The mishna continues to discuss those items with which it is permitted to go out and those items with which it is prohibited to go out on Shabbat. A woman may go out with strands of hair that she put on her head, whether they are from her own hair that she made into a wig, or whether they are from the hair of another, or whether they are from the hair of an animal. GEMARA: We learned in the mishna that a woman may go out with different strands of hair. The Gemara comments: And it is necessary to cite all of the cases. If the mishna taught us only with regard to her own hair, I would have said that she may go out with it because it is not repulsive, as it is her own hair; therefore, there is no concern lest she come to remove the strands and carry them in the public domain. However, the hair of another, which is repulsive and a different color from hers, say no, she may not go out with it, due to concern lest she be embarrassed, remove it, and come to carry it in the public domain.
