א סְרִיס חַמָּה (פֵּרוּשׁ, שֶׁנִּסְתָּרֵס עַל יְדֵי קַדַּחַת, עָרוּךְ), וְאַיְלוֹנִית (פֵּרוּשׁ אַיְלוֹנִית, שֶׁיֵּשׁ לָהּ טֶבַע זָכָר, כְּלוֹמַר שֶׁאֵינָהּ יוֹלֶדֶת, וְאַיְלוֹנִית נִגְזַר מֵאַיִל שֶׁהוּא זְכַר הַצֹאן), אֵינָם בְּנֵי חֲלִיצָה וְיִבּוּם. לְפִיכָךְ, אַיְלוֹנִית וַדָּאִית שֶׁחָלְצָה, לֹא נִפְסְלָה לִכְהֻנָּה. וְכֵן סְרִיס חַמָּה שֶׁחָלַץ, אוֹ שֶׁחָלְצוּ לְאִשְׁתּוֹ, אֵינוֹ כְּלוּם. הַגָּה: הָיָה סְפֵק סָרִיס, חוֹלֵץ. וְלֹא מַחְזְקִינָן לֵהּ בְּוַדַּאי סָרִיס, אֶלָּא אִם רָאוּ בּוֹ, שֶׁנּוֹלַד, אֶחָד מִסִּימָנֵי סָרִיס, כְּגוֹן שֶׁהֵטִיל מַיִם וְלֹא עָשָׂה כִּפָּה; אֲבָל בְּלָאו הָכִי יֵשׁ לָחוּשׁ שֶׁנִּתְקַלְקֵל אַחַר לֵדָתוֹ, וְצָרִיךְ לַחֲלֹץ (רִיבָ"שׁ סִימָן תע"ד). הָיָה לְאַיְלוֹנִית וַדָּאִית, צָרָה, מֻתֶּרֶת לְהִתְיַבֵּם:
1 Someone "saris chamah" (explanation: he became impotent through a disease of fever, Aruch), and an "ayalonit" (explanation: she has a male nature, which means she cannot become pregnant, and "ayalonit" comes from "ayil" which is the male sheep [i.e. ram]), they do not have to do chalitza and yibbum. Therefore, someone who is a definite ayalonit who does chalitza [even though she didn't have to] is not invalid to a kohen. And similarly if someone who is impotent because if fever who does chalitza, or [his relative when he dies] does chalitza to his wife, it is nothing. Rema: If it is [only] a possible saris, he does do chalitza. And we do not assume for a definite saris, unless they see when he was born that he had one of the signs of impotence, for example they sprinkle water but does not make a covering. Buit without this, we suspect the damage happened after birth, and he must do chalitza (Rivash Siman 474). A definite ayalonit's rival wife is permitted to her yibbum [despite the fact that the ayalonit is not].