The Shulchan Aruch · Yoreh De'ah
יורה דעה ש״לYoreh De'ah 330
Siman 330 of 402 in Yoreh De'ah — 9 se'ifim
Se’if 1א׳
עִסַת עוֹבֵד כּוֹכָבִים פְּטוּרָה, אֲפִלּוּ לָשָׁהּ יִשְׂרָאֵל. וְשֶׁל יִשְׂרָאֵל, חַיֶּבֶת, אֲפִלּוּ לָשָׁהּ לוֹ עוֹבֵד כּוֹכָבִים. נְתָנָהּ לְיִשְׂרָאֵל בְּמַתָּנָה, אִם עַד שֶׁלֹּא גִּלְגְּלָהּ נִתְּנָה לוֹ, חַיֶּבֶת. וְאִם לְאַחַר שֶׁגִּלְגְּלָהּ נְתָנָהּ לוֹ, פְּטוּרָה. עוֹבֵד כּוֹכָבִים שֶׁהִפְרִישׁ חַלָּה, אֵינוֹ כְּלוּם, וְתֵאָכֵל לְזָר (בֵּית יוֹסֵף בְּשֵׁם הָרַמְבַּ"ם).
The dough of an idolater is exempt, even if an Israelite kneaded it; and that of an Israelite is liable, even if an idolater kneaded it for him. If he gave it to an Israelite as a gift: if it was given to him before he rolled it, it is liable; and if he gave it to him after he rolled it, it is exempt. An idolater who separated challah (the portion of dough given to a priest) — it is nothing, and it may be eaten by a non-priest (Beit Yosef in the name of the Rambam).
Se’if 2ב׳
עִסַת הַשֻּׁתָּפִין חַיֶּבֶת.
The dough of partners is liable.
Se’if 3ג׳
יִשְׂרָאֵל שֶׁהוּא שֻׁתָּף עִם הָעוֹבֵד כּוֹכָבִים, אִם אֵין בְּחֵלֶק הַיִּשְׂרָאֵל כַּשִּׁעוּר, פְּטוּרָה. וְאִם יֵשׁ בָּהּ כַּשִּׁעוּר, חַיֶּבֶת, וְיָכוֹל לְהַפְרִישׁ מִנֵּיהּ וּבֵיהּ.
An Israelite who is a partner with the idolater: if the Israelite's portion does not hold the measure, it is exempt; and if it holds the measure, it is liable, and he may separate from within it.
Shulchan Aruch, Yoreh De'ah — Torat Emet 357 edition, via Sefaria — public domain
English rendered from the Hebrew for this app — The Gematria's own rendering program. A rendering of the words, not a ruling; practical halacha is learned with a rav