Jerusalem Talmud Pesachim 9.8

משנה: הַפֶּסַח שֶׁנִּתְעָרְבָה בַּזְּבָחִים כּוּלָּן יִרְעוּ עַד שֶׁיִּסְתָּאֲבוּ וְיִמָּכְרוּ וְיָבִיא בִּדְמֵי הַיָּפֶה שֶׁבָּהֶן מִמִּין זֶה וּבִדְמֵי הַיָּפֶה שֶׁבָּהֶן מִמִּין זֶה וְיַפְסִיד הַמּוֹתָר מִבֵּיתוֹ. נִתְעָרַב בַּבְּכוֹרוֹת רִבִּי שִׁמְעוֹן אוֹמֵר אִם חֲבוּרַת כֹּהֲנִים יֹאכֵלוּ:

MISHNAH: If a Pesaḥ was mingled with sacrifices, all of them shall graze until they become unusable, then be sold, and for the value of the best among them he shall bring one of each kind and lose the difference on his account. If it was mingled with firstlings, Rebbi Simeon says, if it is a company of priests, they shall eat.

הלכה: תַּנֵּי. אֵין לוֹקְחִין שְׁבִיעִית בְּכֶסֶף מַעֲשֵׂר. רִבִּי יוֹסֵה אָמַר. בְּמַחֲלוֹקֶת. אָמַר רִבִּי יוֹנָה. דִּבְרֵי הַכֹּל הִיא. אוֹכְלֵי תְרוּמָה זְרִיזִין הֵן. הָתִיב רִבִּי חֲנַנְיָה קוֹמֵי רִבִּי מָנָא. וְהָתַנִּינָן. נִתְעָרַב בַּבְּכוֹרוֹת רִבִּי שִׁמְעוֹן אוֹמֵר אִם חֲבוּרַת כֹּהֲנִים יֹאכֵלוּ. וְתַנֵּי עֲלָהּ. יֹאכְלוּ כַחָמוּר שֶׁבָּהֶן. אָמַר לֵיהּ. אוֹכְלֵי פְסָחִים בְּשָׁעָתָן זְרִיזִין הֵן כְּאוֹכְלֵי תְרוּמָה. תֵּדַע לָךְ. דְּתַנִּינָן. אֵין צוֹלִין בָּשָׂר בָּצָל וּבֵיצָה אֶלָּא כְּדֵי שֶׁיִּצּוֹלוּ. וְתַנִּינְן. מְשַׁלְשְׁלִין אֶת הַפֶּסַח לַתַּנּוּר עִם חֲשֵׁיכָה.

HALAKHAH: It was stated: “One does not buy Sabbatical [produce] with tithe money.” Rebbi Yose said, that is a disagreement. Rebbi Jonah said, that is the opinion of everybody. The eaters of heave are careful. Rebbi Ḥananiah objected before Rebbi Mana: Did we not state: “If they were mingled with firstlings, Rebbi Simeon says, if it is a company of Cohanim they should eat.” And we have stated on that, they should be eaten following the more stringent rules. He said to him, eaters of the Pesaḥ in its time are as careful as the eaters of heave. You should know this since we have stated: “One roasts meat, onion, or egg only that they should be roasted“, but we have stated: “One lowers the Pesaḥ into the oven at nightfall.”