Mishnah Mikvaos 10:6: Beit Shammai say: Hot waters cannot be immersed in cold waters, nor cold waters in hot waters, nor good waters in bad waters, nor bad waters in good waters. Beit Hillel say: these can be immersed. If a vessel is full of liquid [i.e. not water] and one immersed it, it is as though it was not immersed. If it was full of urine, it is viewed as though it were water [and the vessel is pure]. If it was full of chatat waters [waters sanctified with the ashes of the red heifer and used as part of the purification ritual, it is not pure], until the water is greater than the amount of the chatat waters. Rabbi Yose says: even if a vessel that can hold a kor [a large unit of volume] has in it only a revi’it [a smaller unit of volume, of any of these liquids other than water], it is as though it was not immersed.

בֵּית שַׁמַּאי אוֹמְרִים, אֵין מַטְבִּילִין חַמִּין בְּצוֹנֵן וְלֹא צוֹנֵן בְּחַמִּין, לֹא יָפִים בְּרָעִים וְלֹא רָעִים בְּיָפִים. בֵּית הִלֵּל אוֹמְרִים, מַטְבִּילִין. כְּלִי שֶׁהוּא מָלֵא מַשְׁקִין וְהִטְבִּילוֹ, כְּאִלּוּ לֹא טָבָל. מָלֵא מֵי רַגְלַיִם, רוֹאִים אוֹתָם כְּאִלּוּ הֵם מָיִם. מָלֵא מֵי חַטָּאת, עַד שֶׁיִּרְבּוּ הַמַּיִם עַל מֵי חַטָּאת. רַבִּי יוֹסֵי אוֹמֵר, אֲפִלּוּ כְלִי מַחֲזִיק כּוֹר וְאֵין בּוֹ אֶלָּא רְבִיעִית, כְּאִלּוּ לֹא טָבָל:

Mishnah Mikvaos 10:7: All foods can join together [into the minimum measure] of impure foods] to render one’s body invalid [from being able to eat terumah, i.e. impure], by [the measure of] half of a pras [a specific unit of measure]. All liquids can join together [into the minimum measure of impure liquids] to render one’s body invalid [i.e. impure] by [the measure of] a revi’it. In this matter, one who drinks impure liquids is treated more stringently than a mikveh [a gathering of water collected by natural means and immersed in for purification], since [regarding one who drinks impure liquids,] they made the rest of the liquids like water for him [i.e. impure liquids other than water can also render one’s body impure if he drinks enough of them; but regarding a mikveh, other liquids are not treated like water, since only three log of drawn water, and not of other liquids, invalidate a mikveh].

כָּל הָאֳכָלִין מִצְטָרְפִין לִפְסֹל אֶת הַגְּוִיָּה בְּכַחֲצִי פְרָס. כָּל הַמַּשְׁקִין מִצְטָרְפִין לִפְסֹל אֶת הַגְּוִיָּה בִּרְבִיעִית. זֶה חֹמֶר בְּשׁוֹתֶה מַשְׁקִין טְמֵאִין מִבַּמִּקְוֶה, שֶׁעָשׂוּ בוֹ שְׁאָר הַמַּשְׁקִין כַּמָּיִם: