recovered from “Mishneh Torah, Passover Offering 8:11”
Mishneh Torah, Hilchot Korban Pesach
משנה תורה, הלכות קרבן פסח ה׳:ד׳-ה׳
Mishneh Torah, Hilchot Korban Pesach 5:4-5
A person in a state of impurity who could purify himself for the first Paschal sacrifice but refrains and remains impure until the sacrifice time passes is considered to have intentionally failed the first sacrifice, and similarly an uncircumcised person who does not circumcise himself before the time passes; therefore such individuals who also fail the second Paschal sacrifice incur karet even if inadvertent. Furthermore, one's own circumcision, circumcision of one's minor children, circumcision of all one's Canaanite servants, and immersion of one's Canaanite maidservants all hold one back from offering the Paschal sacrifice such that offering it before completing these prerequisites invalidates the sacrifice.
טָמֵא שֶׁיָּכוֹל לִטַּהֵר בְּפֶסַח רִאשׁוֹן. שֶׁלֹּא טָבַל אֶלָּא יָשַׁב בְּטֻמְאָתוֹ עַד שֶׁעָבַר זְמַן הַקָּרְבָּן. וְכֵן עָרֵל שֶׁלֹּא מָל עַד שֶׁעָבַר זְמַן הַקָּרְבָּן. הֲרֵי זֶה מֵזִיד בָּרִאשׁוֹן. לְפִיכָךְ אִם לֹא עָשָׂה אֶת הַשֵּׁנִי אֲפִלּוּ בִּשְׁגָגָה חַיָּב כָּרֵת: כְּשֵׁם שֶׁמִּילַת עַצְמוֹ מְעַכַּבְתּוֹ מִלַּעֲשׂוֹת פֶּסַח כָּךְ מִילַת בָּנָיו הַקְּטַנִּים וּמִילַת כָּל עֲבָדָיו בֵּין גְּדוֹלִים בֵּין קְטַנִּים מְעַכֶּבֶת אוֹתוֹ. שֶׁנֶּאֱמַר (שמות יב מח) "הִמּוֹל לוֹ כָל זָכָר וְאָז יִקְרַב לַעֲשׂוֹתוֹ". וְאִם שָׁחַט קֹדֶם שֶׁיָּמוּל אוֹתָם הַפֶּסַח פָּסוּל. וְכֵן טְבִילַת אַמְהוֹתָיו לְשֵׁם עַבְדוּת מְעַכַּבְתּוֹ. וְדָבָר זֶה מִפִּי הַקַּבָּלָה. שֶׁהַטְּבִילָה לִשְׁפָחוֹת כְּמִילָה לַעֲבָדִים:
When a person is impure, but could purify himself to partake of the first Paschal sacrifice, and yet refrains from immersing himself and instead, remains in a state of impurity until the time for offering the sacrifices passes, he is considered as having intentionally failed to sacrifice the first Paschal sacrifice. This ruling also applies to an uncircumcised person who does not circumcise himself until the time for the sacrifice passes. Therefore if these individuals do not offer the second Paschal sacrifice - even if their failure to do so is inadvertent - they are liable for karet. Just as the failure to circumcise oneself holds a person back from offering the Paschal sacrifice, so too, the failure to circumcise one's children below the age of majority and the failure to circumcise all of one's Canaanite servants, whether above majority or below majority, holds him back, as Exodus 12:48 states: "He shall circumcise all males, then he will draw close to offer it." If one offered the Paschal sacrifice before circumcising the above individuals, the Paschal sacrifice is invalidated. Similarly, the immersion of one's Canaanite maidservants in a mikveh for the sake of servitude holds one back from offering the Paschal sacrifice. This matter is part of the received tradition: immersion for maidservants is equivalent to circumcision for servants.
