The Mishnah
יומא ג׳Yoma 3
Perek 3 of 8 in Yoma — 11 mishnayot
Mishnah 1א׳
אָמַר לָהֶם הַמְמֻנֶּה, צְאוּ וּרְאוּ אִם הִגִּיעַ זְמַן הַשְּׁחִיטָה. אִם הִגִּיעַ, הָרוֹאֶה אוֹמֵר, בַּרְקַאי. מַתִּתְיָא בֶּן שְׁמוּאֵל אוֹמֵר, הֵאִיר פְּנֵי כָל הַמִּזְרָח עַד שֶׁבְּחֶבְרוֹן. וְהוּא אוֹמֵר הֵן:
The supervisor said to them: Go out and see if the time for slaughter has come. If it had come, the one who saw it would say, "Morning star!" Matitia ben Shmuel says [that the supervisor would ask]: Is the whole east light as far as Hevron? And he would say, "Yes!"
Mishnah 2ב׳
וְלָמָה הֻצְרְכוּ לְכָךְ, שֶׁפַּעַם אַחַת עָלָה מְאוֹר הַלְּבָנָה וְדִמּוּ שֶׁהֵאִיר מִזְרָח, וְשָׁחֲטוּ אֶת הַתָּמִיד, וְהוֹצִיאוּהוּ לְבֵית הַשְּׂרֵפָה. הוֹרִידוּ כֹהֵן גָּדוֹל לְבֵית הַטְּבִילָה. זֶה הַכְּלָל הָיָה בַמִּקְדָּשׁ, כָּל הַמֵּסֵךְ אֶת רַגְלָיו טָעוּן טְבִילָה, וְכָל הַמַּטִּיל מַיִם טָעוּן קִדּוּשׁ יָדַיִם וְרַגְלָיִם:
And why did they need [to do] thus? For on one occasion the light of the moon appeared and they assumed that dawn had broken, and they slaughtered the tamid [daily offering], and they [had to] take it out to the place of burning [because the offering was not offered at the proper time]. They took the High Priest down to the place of immersion. This is the rule in the Temple: all who move their bowels require immersion, and all who urinate require washing of the hands and feet.
Mishnah, Torat Emet 357 edition, via Sefaria — public domain
English: Sefaria Community Translation — CC0