10מֻתָּר לִתְלֹשׁ אֶת הַשֵּׂעָר לְכַתְּחִלָּה מִן הַקָּדָשִׁים כְּדֵי לְהַרְאוֹת הַמּוּם לְמֻמְחֶה. וְאוֹתוֹ הַשֵּׂעָר שֶׁתָּלַשׁ אוֹ שֶׁנָּשַׁר מִן הַבְּהֵמָה אוֹ מִן הַבְּכוֹר וְהַמַּעֲשֵׂר הֲרֵי זֶה אָסוּר בַּהֲנָיָה אֲפִלּוּ לְאַחַר שֶׁיִּשָּׁחֲטוּ מִפְּנֵי מוּמָן. גְּזֵרָה שֶׁמָּא יַשְׁהֶה אוֹתָן הוֹאִיל וְאֵינָן בָּאִין לְכַפָּרָה. אֲבָל צֶמֶר הַנּוֹשֵׁר מִן הַחַטָּאת וְהָאָשָׁם מֻתָּר בַּהֲנָיָה לְאַחַר שְׁחִיטָתָן מִפְּנֵי מוּמָן. הוֹאִיל וּלְכַפָּרָה הֵן בָּאִין אֵינוֹ מַשְׁהֶה אוֹתָן. וְאִם נִתְלַשׁ מִן הָעוֹלָה הֲרֵי זֶה סָפֵק. וְכָל שֶׁיִּתָּלֵשׁ מִכָּל הַקָּדָשִׁים אַחַר שֶׁנָּפַל בָּהֶן מוּם הֲרֵי הוּא מֻתָּר בַּהֲנָיָה שֶׁהֲרֵי לֹא תָּלַשׁ בְּיָדוֹ. חוּץ מִן הַבְּכוֹר וְהַמַּעֲשֵׂר שֶׁאַף הַנִּתְלָשׁ מִמֶּנּוּ אַחַר שֶׁנָּפַל בּוֹ מוּם אָסוּר בַּהֲנָיָה:
It is permitted, even as an initial preference, to pull off hair from a sacrificial animal in order to show a physical blemish to an expert. It is forbidden to benefit from the hair that was pulled off or which fell from a consecrated animal, a firstborn animal, or one designated as the tithes, even after it was redeemed and slaughtered because of its blemish. This is a decree lest the sacrifice of such an animal be delayed, because it does not come to bring about atonement. It is, by contrast, permitted to benefit from wool which fell from an animal designated as a sin-offering or a guilt-offering after it has been redeemed and slaughtered because of a physical blemish. The rationale is that since these offerings come to bring about atonement, the owners will not delay their sacrifice. There is an unresolved doubt if it is permitted to benefit from wool that was pulled off from a burnt-offering. It is permitted to benefit from any wool that becomes pulled off from sacrificial animals after they have contracted a blemish, for it was not pulled off intentionally. The only exception is the wool of a firstborn animal and one designated as a tithe. In those instances, it is forbidden to benefit from wool even if it was pulled off from such an animal after it contracted a blemish.