Tosefta for Shabbat 8:1
הַמּוֹצִיא יַיִן, כְּדֵי מְזִיגַת הַכּוֹס. חָלָב, כְּדֵי גְמִיעָה. דְּבַשׁ, כְּדֵי לִתֵּן עַל הַכָּתִית. שֶׁמֶן, כְּדֵי לָסוּךְ אֵבֶר קָטָן. מַיִם, כְּדֵי לָשׁוּף בָּהֶם אֶת הַקִּילוֹר. וּשְׁאָר כָּל הַמַּשְׁקִין, בִּרְבִיעִית. וְכָל הַשּׁוֹפָכִין, בִּרְבִיעִית. רַבִּי שִׁמְעוֹן אוֹמֵר, כֻּלָּן בִּרְבִיעִית, וְלֹא אָמְרוּ כָל הַשִּׁעוּרִין הַלָּלוּ אֶלָּא לְמַצְנִיעֵיהֶן:
If one takes out wine, (the quantity for liability is) what suffices for pouring the cup [of grace, which is a quarter of a revi'ith of raw wine, so that if diluted with three measures of water to one of wine, it stands at a quarter of a log, which is the quantity for the cup of blessing.]; milk, what suffices for quaffing [i.e., what he swallows at one time. And the quantity for the milk of an unclean beast, which is not fit for drinking, is that which suffices for the painting of one eye.]; honey, what suffices for placing upon a kathith [a sore on a horse or an ass produced by carrying burdens. I have found it written that the tip of an inflamed skin sore is called "pi kathith." And even though honey is used primarily for eating, since it is handy for healing purposes and its quantity is minimal, we follow the stringent quantity (vis-à-vis the ruling on carrying)]; oil, what suffices for the anointing of a small limb [of a one-day-old infant, i.e., the small toe]; water, what suffices for the application of collyrium [an eye salve]; and all other liquids, [which are not used for healing purposes], a revi'ith; and all waste-water, [which can be used for kneading clay], a revi'ith. R. Shimon says: All of them, [even wine, milk, and honey], a revi'ith; for all of these quantities [in the Mishnah] were stated only in respect to those who secrete them, [but all others are liable only for a revi'ith. R. Shimon holds that a quantity must be stated for the "secreter" himself, and that he is not liable for less than that quantity. For R. Shimon does not hold that with (7:3), "anything which does not merit being secreted, and the like of which is not secreted," the secreter is liable for any amount. The halachah is not in accordance with R. Shimon.]