Talmud for Chagigah 3:2
כֵּלִים הַנִּגְמָרִין בְּטָהֳרָה, צְרִיכִין טְבִילָה לַקֹּדֶשׁ, אֲבָל לֹא לַתְּרוּמָה. הַכְּלִי מְצָרֵף מַה שֶּׁבְּתוֹכוֹ לַקֹּדֶשׁ, אֲבָל לֹא לַתְּרוּמָה. הָרְבִיעִי בַּקֹּדֶשׁ פָּסוּל, וְהַשְּׁלִישִׁי בַּתְּרוּמָה. וּבַתְּרוּמָה, אִם נִטְמֵאת אַחַת מִיָּדָיו, חֲבֶרְתָּהּ טְהוֹרָה. וּבַקֹּדֶשׁ, מַטְבִּיל שְׁתֵּיהֶן, שֶׁהַיָּד מְטַמָּא אֶת חֲבֶרְתָּהּ בַּקֹּדֶשׁ, אֲבָל לֹא בַּתְּרוּמָה:
Vessels which were finished in cleanliness require immersion for kodesh, but not for terumah. [If a chaver (a Torah scholar) finishes them, and he took special care with them when they came close to being finished when they are susceptible of acquiring uncleanliness — in spite of this they require immersion for kodesh; for we fear that spittle from the mouth of an am ha'aretz may have fallen upon them when the chaver was holding them. And even though at that time the vessel had not yet been finished and did not acquire uncleanliness, perhaps after it was finished and was susceptible of acquiring uncleanliness, the spittle was still wet and imparted uncleanliness. For we learned in Niddah: (The issue of a) niddah, zov (the issue of a zav), and spittle impart uncleanliness when wet.] The vessel combines all that is in it in respect to kodesh, but not in respect to terumah. [If there were many pieces of food in one vessel and a t'vul yom (one who had immersed in the daytime), who invalidates terumah, touched one of them, the vessel combines all of them to be considered as one piece and all of them are unfit, viz. (Numbers 7:14): "One spoon of ten shekels of gold" — Scripture rendered all that is in the spoon one. ("but not for terumah":) Only the piece that he touched is unfit, but the others are clean.] Fourth-degree uncleanliness is unfit [but does not render (another object) unfit] in kodesh, but (only) third-degree uncleanliness in terumah. And with terumah, if one of his hands became unclean [with rabbinical uncleanliness, such as unclean foods and liquids and the like, which make only the hands unclean but not the body], the other hand is clean. But with kodesh, he must immerse both [This, when wetness remained on the hand that became unclean at the time it became unclean, but if not, the other hand does not become unclean until touched by it.], for one hand renders the other unclean with kodesh, but not with terumah.