אֵי זֶהוּ (דברים כג ג) "מַמְזֵר" הָאָמוּר בַּתּוֹרָה. זֶה הַבָּא מֵעֶרְוָה מִן הָעֲרָיוֹת. חוּץ מִן הַנִּדָּה שֶׁהַבֵּן מִמֶּנָּה פָּגוּם וְאֵינוֹ מַמְזֵר. אֲבָל הַבָּא עַל שְׁאָר הָעֲרָיוֹת בֵּין בְּאֹנֶס בֵּין בְּרָצוֹן בֵּין בְּזָדוֹן בֵּין בִּשְׁגָגָה הַוָּלָד מַמְזֵר. וְאֶחָד זְכָרִים וְאֶחָד נְקֵבוֹת אֲסוּרִין לְעוֹלָם שֶׁנֶּאֱמַר (דברים כג ג) "גַּם דּוֹר עֲשִׂירִי" כְּלוֹמַר לְעוֹלָם:
1. What is meant by the Torah's prohibition (Deut. 23:3) against relations with a mamzer? [The term refers to a person conceived from] a forbidden sexual relationship. A niddah is an exception. A son conceived from such relationships is blemished, but is not a mamzer. When, however, a man enters into any other forbidden sexual relationships, whether through rape, or willingly, whether conscious of the prohibition or not, the offspring produced is a mamzer. Both male and female [mamzerim] are forbidden forever, as [Deuteronomy 23:3] states: "[A mamzer shall not enter Gd's congregation.] Also the tenth generation...," i.e., [the prohibition is] everlasting.
