The Mishnah
ביצה ב׳Beitzah 2
Perek 2 of 5 in Beitzah — 10 mishnayot
Mishnah 1א׳
יוֹם טוֹב שֶׁחָל לִהְיוֹת עֶרֶב שַׁבָּת, לֹא יְבַשֵּׁל אָדָם בַּתְּחִלָּה מִיּוֹם טוֹב לַשַּׁבָּת, אֲבָל מְבַשֵּׁל הוּא לְיוֹם טוֹב, וְאִם הוֹתִיר, הוֹתִיר לַשַּׁבָּת, וְעוֹשֶׂה תַבְשִׁיל מֵעֶרֶב יוֹם טוֹב וְסוֹמֵךְ עָלָיו לַשַּׁבָּת. בֵּית שַׁמַּאי אוֹמְרִים, שְׁנֵי תַבְשִׁילִין. וּבֵית הִלֵּל אוֹמְרִים, תַּבְשִׁיל אֶחָד. וְשָׁוִין בְּדָג וּבֵיצָה שֶׁעָלָיו שֶׁהֵן שְׁנֵי תַבְשִׁילִין. אֲכָלוֹ אוֹ שֶׁאָבַד, לֹא יְבַשֵּׁל עָלָיו בַּתְּחִלָּה. וְאִם שִׁיֵּר מִמֶּנּוּ כָל שֶׁהוּא, סוֹמֵךְ עָלָיו לַשַּׁבָּת:
When a festival falls on the eve of Shabbat, one should not, at the outset, cook for Shabbat on the festival, but one may cook for the festival, and if he has [food] left over, it is left over for [and its use is permissible on] Shabbat. And one may prepare a cooked dish on the eve of a festival [which falls on the eve of Shabbat] and rely on it [to permit cooking on the holiday] for Shabbat. Beit Shammai say: two cooked dishes [are required in order to rely on this leniency]. Beit Hillel say: one cooked dish [is sufficient]. And they are in agreement regarding a fish with an egg on top of it, that those [together] are considered two cooked dishes. If it [the food set aside] was eaten or lost, one may not, at the outset, cook [on the holiday for Shabbat by relying] upon it. But if any amount of it remains, one may rely upon it [to cook on the holiday] for Shabbat.
Mishnah 2ב׳
חָל לִהְיוֹת אַחַר הַשַּׁבָּת, בֵּית שַׁמַּאי אוֹמְרִים, מַטְבִּילִין אֶת הַכֹּל מִלִּפְנֵי הַשַּׁבָּת, וּבֵית הִלֵּל אוֹמְרִים, כֵּלִים מִלִּפְנֵי הַשַּׁבָּת, וְאָדָם בַּשַּׁבָּת:
If it [a festival] falls [on the day] after Shabbat, Beit Shammai say: everything [requiring ritual immersion] should be immersed before Shabbat. And Beit Hillel say: vessels [must be immersed] before Shabbat, but people [may immerse even] on Shabbat.
Mishnah, Torat Emet 357 edition, via Sefaria — public domain
English: Sefaria Community Translation — CC0