Commentary for Keritot 1:1
שְׁלשִׁים וָשֵׁשׁ כְּרֵתוֹת בַּתּוֹרָה. הַבָּא עַל הָאֵם, וְעַל אֵשֶׁת הָאָב, וְעַל הַכַּלָּה, הַבָּא עַל הַזְּכוּר, וְעַל הַבְּהֵמָה, וְהָאִשָּׁה הַמְבִיאָה אֶת הַבְּהֵמָה עָלֶיהָ, הַבָּא עַל אִשָּׁה וּבִתָּהּ, וְעַל אֵשֶׁת אִישׁ, הַבָּא עַל אֲחוֹתוֹ, וְעַל אֲחוֹת אָבִיו, וְעַל אֲחוֹת אִמּוֹ, וְעַל אֲחוֹת אִשְׁתּוֹ, וְעַל אֵשֶׁת אָחִיו, וְעַל אֵשֶׁת אֲחִי אָבִיו, וְעַל הַנִּדָּה, הַמְגַדֵּף, וְהָעוֹבֵד עֲבוֹדָה זָרָה, וְהַנּוֹתֵן מִזַּרְעוֹ לַמֹּלֶךְ, וּבַעַל אוֹב, הַמְחַלֵּל אֶת הַשַּׁבָּת, וְטָמֵא שֶׁאָכַל אֶת הַקֹּדֶשׁ, וְהַבָּא לַמִּקְדָּשׁ טָמֵא, הָאוֹכֵל חֵלֶב, וְדָם, נוֹתָר, וּפִגּוּל, הַשּׁוֹחֵט וְהַמַּעֲלֶה בַּחוּץ, הָאוֹכֵל חָמֵץ בְּפֶסַח, וְהָאוֹכֵל וְהָעוֹשֶׂה מְלָאכָה בְיוֹם הַכִּפּוּרִים, הַמְפַטֵּם אֶת הַשֶּׁמֶן, וְהַמְפַטֵּם אֶת הַקְּטֹרֶת, וְהַסָּךְ בְּשֶׁמֶן הַמִּשְׁחָה. הַפֶּסַח וְהַמִּילָה בְּמִצְוֹת עֲשֵׂה:
[There are] thirty-six acts for which the Torah [prescribes] <i>Karet</i> [excision at the hands of Heaven. It is a punishment for]: One who has relations with his mother, or with his father's wife, or with his daughter-in-law, or with a man, or with an animal, or a woman who has an animal have relations with her, or one who has relations with a woman and her daughter, or with a married woman, or with his sister, or with his paternal aunt, or with his maternal aunt, or with his wife's sister, or with his brother's wife, or with the wife of his father's brother, or with a <i>Niddah</i> [a woman who has menstruated and is thereby impure]. [Other individuals who are subject to <i>Karet</i> are]: One who blasphemes [curses God], or who worships idols, or who sacrifices his children to <i>Molekh</i> [a type of idolatry wherein one passes his child through fire or between flames],or a necromancer, or one who violates Shabbat, or an impure person who eats consecrated food, one who enters the Temple when impure, or one who eats forbidden fat, or who eats blood, or who eats <i>Notar</i> [a sacrifice that becomes unfit due to being unconsumed past the permitted time], or who eats <i>Piggul</i> [a sacrifice that becomes unfit due to the intention of the officiating priest while offering it, to consume it after its permitted time], or one who slaughters a sacrifice outside [the Temple precincts], or who offers up a sacrifice outside [the Temple precincts], or who eats leavened bread on Pesach, or who eats on Yom Kippur, or who does <i>Melakhah</i> [a constructive activity forbidden on Shabbat and festivals] on Yom Kippur, or one who prepares oil [after the manner of the Temple's anointing oil], or who prepares <i>Ketoret</i> [holy incense offered twice a day on the golden altar inside the Temple], or who anoints [himself] with the anointing oil. Positive commandments [whose neglect warrants <i>Karet</i> are]: The Passover offering, and circumcision.
Bartenura on Mishnah Keritot
English Explanation of Mishnah Keritot
When one has intercourse with his mother,
His father's wife;
Or his daughter-in-law;
When a man has intercourse with a male,
Or with a beast,
Or when a woman brings a beast upon herself;
When one has intercourse with a woman and her daughter;
Or with a married woman;
Or with his sister;
Or with his father's sister;
Or his mother's sister;
Or his wife's sister;
Or his brother's wife;
Or the wife of his father's brother;
Or with a menstruating woman;
One who blasphemes [the Lord];
One who worships idols;
Or dedicates his children to Molech;
Or has a ba’al ov;
Or desecrates the Shabbat;
When an unclean person eats of sacred food;
Or when one enters the precincts of the Temple in an unclean state;
When one eats forbidden fat,
Or blood;
Notar;
Or piggul;
When one slaughters
Or offers up [a consecrated animal] outside [the Temple];
One who eats anything leavened on Pesah;
One who eats
Or works on Yom Kippur;
One who compounds the oil [of anointing];
Or compounds incense;
Or uses [unlawfully] oil of anointing;
And [when one transgresses the laws of] the pesah,
And circumcision from among positive commandments.
Keritot opens with a list of thirty-six transactions for which one is liable karet if one commits the transgression intentionally, but without prior warning.
This is not really the place to explain each of these transgressions. Rather I will give brief biblical references for each and explain anything that I feel is a bit more complicated.
I have merely duplicated each section below for ease of reference. Sorry if this is a bit long…
1) When one has intercourse with his mother; Leviticus 18:7.
2) His father's wife; ibid: 8.
3) Or his daughter-in-law; ibid: 15.
4) When a man has intercourse with a male: ibid: 22.
5) Or with a beast: ibid: 23.
6) Or when a woman brings a beast upon herself: ibid.
7) When one has intercourse with a woman and her daughter: ibid: 17.
8) Or with a married woman: ibid: 20.
9) Or with his sister; ibid: 9.
10) Or with his father's sister: ibid: 12.
11) Or his mother's sister: ibid: 13.
12) Or his wife's sister: ibid: 18.
13) Or his brother's wife: ibid: 16.
14) Or the wife of his father's brother: ibid: 14.
15) Or with a menstruating woman; ibid: 19.
16) One who blasphemes [the Lord]: Numbers 15:30.
17) One who worships idols: No shortage of references in the Tanakh.
18) Or dedicates his children to Molech; Leviticus 18:21.
19) Or has a ba’al ov; Leviticus 19:31.
20) Or desecrates the Shabbat: Many references, see for instance, Exodus 31:24.
21) When an unclean person eats of sacred food: Leviticus 7:20.
22) Or when one enters the precincts of the Temple in an unclean state:Numbers 19:13.
23) When one eats forbidden fat: Leviticus 7:25.
24) Or blood; ibid, 27.
25) Notar: Leviticus 19: 6-8.
26) Or piggul; Leviticus 7:18.
27) When one slaughters: Leviticus 17:4.
28) Or offers up [a consecrated animal] outside [the Temple]; ibid, 8-9.
29) One who eats anything leavened on Pesah; Exodus 12:19.
30) One who eats:
31) Or works on Yom Kippur; Leviticus 23:28-30 (this and the previous transgression).
32) One who compounds the oil [of anointing]; Exodus 30: 32-33.
33) Or compounds incense; Exodus 30: 37-38.
34) Or uses [unlawfully] oil of anointing; ibid, 32-33.
35) And the pesah: Deuteronomy 16: 2; Numbers 9:13.
36) And circumcision are positive commandments: Leviticus 12:3; Genesis 17:14.