Zevachim8: 2
קָדָשִׁים בְּקָדָשִׁים מִין בְּמִינוֹ, זֶה יִקְרַב לְשֵׁם מִי שֶׁהוּא, וְזֶה יִקְרַב לְשֵׁם מִי שֶׁהוּא. קָדָשִׁים בְּקָדָשִׁים מִין בְּשֶׁאֵינוֹ מִינוֹ, יִרְעוּ עַד שֶׁיִּסְתָּאֲבוּ, וְיִמָּכְרוּ; וְיָבִיא בִדְמֵי הַיָּפֶה שֶׁבָּהֶן מִמִּין זֶה, וּבִדְמֵי הַיָּפֶה שֶׁבָּהֶן מִמִּין זֶה, וְיַפְסִיד הַמּוֹתָר מִבֵּיתוֹ. נִתְעָרְבוּ בִבְכוֹר וּבְמַעֲשֵׂר, יִרְעוּ עַד שֶׁיִּסְתָּאֲבוּ וְיֵאָכְלוּ כִּבְכוֹר וּכְמַעֲשֵׂר. הַכֹּל יְכוֹלִין לִהִתְעָרֵב חוּץ מִן הַחַטָּאת וּמִן הָאָשָׁם.
Offerings [which became mixed] with [other] offerings [of] the same kind should each be offered for whomever [is the owner]. Offerings [which became mixed] with offerings [of] a different kind should be left to pasture until they become blemished, [after which] they should be sold; [then] for the money of the most expensive of them, he must bring one of each kind [of offering], and make up the difference from his own funds. [If] they became mixed with a bechor- or maaser-offering, they should be left to pasture until they become blemished and [then] be eaten as bechor- and maaser-offerings. Any [kind of offering] can become mixed up [with any other kind] except for the chatas offering [with] the asham-offering.
Zevachim8: 3
אָשָׁם שֶׁנִּתְעָרֵב בִּשְׁלָמִים, יִרְעוּ עַד שֶׁיִּסְתָּאֲבוּ. רַבִּי שִׁמְעוֹן אוֹמֵר: שְׁנֵיהֶם יִשָּׁחֲטוּ בַצָּפוֹן וְיֵאָכְלוּ כֶּחָמוּר שֶׁבָּהֶן. אָמְרוּ לוֹ: אֵין מְבִיאִין קָדָשִׁים לְבֵית הַפְּסוּל. נִתְעָרְבוּ חֲתִיכוֹת בַּחֲתִיכוֹת — קָדְשֵׁי קָדָשִׁים בְּקָדָשִׁים קַלִּים, הַנֶּאֱכָלִין לְיוֹם אֶחָד בְּנֶאֱכָלִים לִשְׁנֵי יָמִים — יֵאָכְלוּ כֶּחָמוּר שֶׁבָּהֶן.
[If] an asham-offering became mixed with a shelamim-offering, they should be left to graze until they become blemished. R’ Shimon says: Both of them should be slaughtered in the north and be eaten according to [the laws of] the more stringent of them. They said to him: One may not expose offerings to an area of disqualification. [If] slices [of offering meat] became mixed with [other] slices — [whether it was] most holy offerings with offerings of lesser holiness, [or] those which are eaten for one day with those which are eaten for two days — they should be eaten according to [the laws of] the more stringent of them.