38 Nedarim 3/10-11

(י) הַנּוֹדֵר מִשּׁוֹבְתֵי שַׁבָּת, אָסוּר בְּיִשְׂרָאֵל וְאָסוּר בַּכּוּתִים. מֵאוֹכְלֵי שׁוּם, אָסוּר בְּיִשְׂרָאֵל וְאָסוּר בַּכּוּתִים. מֵעוֹלֵי יְרוּשָׁלַיִם, אָסוּר בְּיִשְׂרָאֵל וּמֻתָּר בַּכּוּתִים:

(יא) קוֹנָם שֶׁאֵינִי נֶהֱנֶה לִבְנֵי נֹחַ, מֻתָּר בְּיִשְׂרָאֵל וְאָסוּר בְּאֻמּוֹת הָעוֹלָם. שֶׁאֵינִי נֶהֱנֶה לְזֶרַע אַבְרָהָם, אָסוּר בְּיִשְׂרָאֵל וּמֻתָּר בְּאֻמּוֹת הָעוֹלָם. שֶׁאֵינִי נֶהֱנֶה לְיִשְׂרָאֵל, לוֹקֵחַ בְּיוֹתֵר וּמוֹכֵר בְּפָחוֹת. שֶׁיִּשְׂרָאֵל נֶהֱנִין לִי, לוֹקֵחַ בְּפָחוֹת וּמוֹכֵר בְּיוֹתֵר, אִם שׁוֹמְעִין לוֹ. שֶׁאֵינִי נֶהֱנֶה לָהֶן וְהֵן לִי, יְהַנֶּה לַנָּכְרִים. קוֹנָם שֶׁאֵינִי נֶהֱנֶה לָעֲרֵלִים, מֻתָּר בְּעַרְלֵי יִשְׂרָאֵל וְאָסוּר בְּמוּלֵי הַגּוֹיִם. קוֹנָם שֶׁאֵינִי נֶהֱנֶה לַמּוּלִים, אָסוּר בְּעַרְלֵי יִשְׂרָאֵל וּמֻתָּר בְּמוּלֵי הַגּוֹיִם, שֶׁאֵין הָעָרְלָה קְרוּיָה אֶלָּא לְשֵׁם הַגּוֹיִם, שֶׁנֶּאֱמַר (ירמיה ט) כִּי כָל הַגּוֹיִם עֲרֵלִים וְכָל בֵּית יִשְׂרָאֵל עַרְלֵי לֵב, וְאוֹמֵר (שמואל א יז) וְהָיָה הַפְּלִשְׁתִּי הֶעָרֵל הַזֶּה, וְאוֹמֵר (שמואל ב א) פֶּן תִּשְׂמַחְנָה בְּנוֹת פְּלִשְׁתִּים, פֶּן תַּעֲלֹזְנָה בְּנוֹת הָעֲרֵלִים. רַבִּי אֶלְעָזָר בֶּן עֲזַרְיָה אוֹמֵר, מְאוּסָה עָרְלָה שֶׁנִּתְגַּנּוּ בָהּ הָרְשָׁעִים, שֶׁנֶּאֱמַר, כִּי כָל הַגּוֹיִם עֲרֵלִים. רַבִּי יִשְׁמָעֵאל אוֹמֵר, גְּדוֹלָה מִילָה שֶׁנִּכְרְתוּ עָלֶיהָ שְׁלֹשׁ עֶשְׂרֵה בְרִיתוֹת. רַבִּי יוֹסֵי אוֹמֵר, גְּדוֹלָה מִילָה, שֶׁדּוֹחָה אֶת הַשַּׁבָּת הַחֲמוּרָה. רַבִּי יְהוֹשֻׁעַ בֶּן קָרְחָה אוֹמֵר, גְּדוֹלָה מִילָה, שֶׁלֹּא נִתְלָה לוֹ לְמֹשֶׁה הַצַדִּיק עָלֶיהָ מְלֹא שָׁעָה. רַבִּי נְחֶמְיָה אוֹמֵר, גְּדוֹלָה מִילָה, שֶׁדּוֹחָה אֶת הַנְּגָעִים. רַבִּי אוֹמֵר, גְּדוֹלָה מִילָה, שֶׁכָּל הַמִּצְוֹת שֶׁעָשָׂה אַבְרָהָם אָבִינוּ לֹא נִקְרָא שָׁלֵם, עַד שֶׁמָּל, שֶׁנֱּאֶמַר (בראשית יז), הִתְהַלֵּךְ לְפָנַי וֶהְיֵה תָמִים. דָּבָר אַחֵר, גְּדוֹלָה מִילָה, שֶׁאִלְמָלֵא הִיא, לֹא בָרָא הַקָּדוֹשׁ בָּרוּךְ הוּא אֶת עוֹלָמוֹ, שֶׁנֶּאֱמַר (ירמיה לג), כֹּה אָמַר ה' אִם לֹא בְרִיתִי יוֹמָם וָלָיְלָה, חֻקּוֹת שָׁמַיִם וָאָרֶץ לֹא שָׂמְתִּי:

(10) Someone who vows [not to benefit] from those who keep Shabbat is forbidden [to benefit from] Jews and Kutim [Samaritans, an ancient schismatic Jewish group] . [One who vows not to benefit] from those who eat garlic is forbidden [to benefit from] Jews and forbidden [to benefit from] Kutim. [However, one who vows not to benefit] from those who go up to Jerusalem (for the pilgrimage festivals) is forbidden [to benefit from] Jews and permitted [to benefit from] Kutim.

(11) [Someone who vows:] "konam that I won't benefit from 'the sons of Noah'" is permitted to [benefit from] Jews and forbidden [to benefit] from Gentiles. [One who vows: "konam] that I won't benefit from the offspring of Abraham," is forbidden [to benefit] from Jews and permitted [to benefit] from Gentiles. [One who vows: "konam] that I won't benefit from Jews," must buy [from Jews] at a higher price [than usual] and sell [to them] at a lower price. [One who vows: "konam] that Jews won't benefit from me," must buy at a lower price and sell at a higher price [than usual], as long as there are any Jews who would heed him [in his offer]. [One who vows: "konam] that they won't benefit from me, nor I from them," may benefit from Gentiles. [One who vows:]"konam that I won't benefit from the uncircumcised," is permitted [to benefit from] uncircumcised Jews but forbidden to [benefit from] circumcised Gentiles. [One who vows:] "konam that I won't benefit from the circumcised" is prohibited [to benefit] from uncircumcised Jews and permitted [to benefit] from circumcised Gentiles. [This is] because [the term] 'orla' [foreskin] is only used in reference to Gentiles, as it is written: (Jeremiah 9:25) "Because all the nations are arelim [uncircumcised], but all the house of Israel are of uncircumcised heart," and it says: (I Samuel 17:36) "and this arel Philistine," and it says: (II Samuel 1:20) "Lest the daughters of the Philistines rejoice, Lest the daughters of the arelim triumph". Rabbi Eleazar ben Azariah says: "Disgusting is the foreskin, [since] the wicked are insulted through it, as it says: 'because all the nations are uncircumcised'". Rabbi Yishmael says: "Great is circumcision, for thirteen covenants were sealed concerning it". Rabbi Yose says: "Great is circumcision, that it overrules the strict [prohibitions of] Shabbat." Rabbi Yehoshua ben Korcha says: "Great is circumcision, for Moses the righteous wasn't given a moment [to allow his son to remain uncircumcised]. Rabbi Nechemiah says: "Great is circumcision, for it overrules [the prohibitions of] nega'im [impure afflictions]." Rabbi says: "Great is circumcision, for [despite] all the commandments that Abraham did, he was not called 'complete' until he was circumcised, as it says: (Genesis 17:1) 'Walk before Me and be complete'". Another saying [of his]: "Great is circumcision, for but for it, the Holy One would not have have created His world, as it says: (Jeremiah 33:25) "Thus says the Lord, 'If my covenant is not established day and night, the laws of the heavens and earth I will not set.'"