The Mishnah
חלה ג׳Challah 3
Perek 3 of 4 in Challah — 10 mishnayot
Mishnah 1א׳
אוֹכְלִין עֲרַאי מִן הָעִסָּה, עַד שֶׁתִּתְגַּלְגֵּל בַּחִטִּים וְתִטַּמְטֵם בַּשְּׂעוֹרִים. גִּלְגְּלָהּ בַּחִטִּים וְטִמְטְמָהּ בַּשְּׂעוֹרִים, הָאוֹכֵל מִמֶּנָּה חַיָּב מִיתָה. כֵּיוָן שֶׁהִיא נוֹתֶנֶת אֶת הַמַּיִם, מַגְבַּהַת חַלָּתָהּ, וּבִלְבַד שֶׁלֹּא יְהֵא שָׁם חֲמִשָּׁה רִבְעֵי קֶמַח:
One may eat incidentally from the dough before it is rolled, in the case of wheat flour, or before it was mixed into a cohesive unit, in the case of barley flour. Once one has rolled wheat flour, or mixed barley flour into a cohesive dough, one who eats from it is liable for death [for eating Priestly food]. As soon as she puts in water, she should separate the Challah, provided that there is not [the minimum quantity of] five quarters of a Kav [specific unit of volume] of flour there.
Mishnah 2ב׳
נִדְמְעָה עִסָּתָהּ עַד שֶׁלֹּא גִלְגְּלָה, פְּטוּרָה, שֶׁהַמְּדֻמָּע פָּטוּר. וּמִשֶּׁגִּלְגְּלָה, חַיֶּבֶת. נוֹלַד לָהּ סְפֵק טֻמְאָה עַד שֶׁלֹּא גִלְגְּלָה, תֵּעָשֶׂה בְטֻמְאָה, וּמִשֶּׁגִּלְגְּלָה, תֵּעָשֶׂה בְטָהֳרָה:
If her dough became Meduma [mixture of Chulin (permitted foodstuff) and Terumah (a portion of a crop given to a Kohen) that is forbidden to non-Kohanim], before she rolls it, it is exempt from Challah, as Meduma is exempt; after she rolled it, it is obligated. If there was a doubt [concerning purity] before she mixed, it may be completed while she is in a state of impurity; after she rolled it, however, it must be completed in a state of purity.
Mishnah, Torat Emet 357 edition, via Sefaria — public domain
English: Sefaria Community Translation — CC0