חלה ד׳Challah 4

Mishnah 1א׳

שְׁתֵּי נָשִׁים שֶׁעָשׂוּ שְׁנֵי קַבִּין, וְנָגְעוּ זֶה בָזֶה, אֲפִלּוּ הֵם מִמִּין אֶחָד, פְּטוּרִים. וּבִזְמַן שֶׁהֵם שֶׁל אִשָּׁה אַחַת, מִין בְּמִינוֹ, חַיָּב. וְשֶׁלֹּא בְמִינוֹ, פָּטוּר:

Two women who made two [batches of dough, totaling two] Kabim [sing., Kav, a specific unit of measure], and these touched one another, even if they are of the same species, they are exempt [from Challah, (a portion of a batch of bread dough given to a Kohen, priest (pl., Kohanim which becomes holy upon separation, and can only be consumed by Kohanim or their household)]. When they belong to one woman: if [the batches are] one species with the same species, they are subject; of different species, they are exempt.

Mishnah 2ב׳

אֵיזֶה הוּא מִין בְּמִינוֹ, הַחִטִּים אֵינָן מִצְטָרְפוֹת עִם הַכֹּל, אֶלָּא עִם הַכֻּסְּמִין. הַשְּׂעוֹרִים מִצְטָרְפוֹת עִם הַכֹּל, חוּץ מִן הַחִטִּים. רַבִּי יוֹחָנָן בֶּן נוּרִי אוֹמֵר, שְׁאָר הַמִּינִים מִצְטָרְפִין זֶה עִם זֶה:

What qualifies as a species with its same species? Wheat does not join together with any [species] other than with spelt; barley joins together with all [species] except wheat. Rabbi Yochanan ben Nuri says, the rest of the species join together one with another.