Related for Beitzah 2:3
וְשָׁוִין שֶׁמַּשִּׁיקִין אֶת הַמַּיִם בִּכְלִי אֶבֶן לְטַהֲרָן, אֲבָל לֹא מַטְבִּילִין. וּמַטְבִּילִין מִגַּב לְגַב וּמֵחֲבוּרָה לַחֲבוּרָה:
And they are of one opinion that it is permitted to "kiss waters" in a stone vessel to cleanse it (the water, on yom tov). [If one had good drinking water which became unclean, he fills with that water a stone vessel which does not acquire uncleanliness, and he places it in a mikveh of salty or muddy water until both waters "kiss." The first water is thus found to be "seeded" and combined with the water of the mikveh and is "nullified" in the latter and cleansed. (There is no cleansing in a mikveh for any food or liquid except water alone; and not through the agency of "immersion," but through the agency of "seeding.")] But it may not be immersed. [It (the unclean water) may not be placed for "kissing" (hashakah) in an unclean vessel which requires immersion so that the immersion cleanse the vessel at the "kissing" of the waters.] But one may immerse (on yom tov) from purpose to purpose. [If one immersed his vessels in order to tread olives with them in the olive press for mundane purposes, and then decided to tread grapes with them in the wine press for purposes of terumah, he must immerse them a second time for purposes of terumah. And if he decided to use them for kodesh (Temple consecrations), he must immerse them again for purposes of kodesh. And he may perform that immersion on yom tov, the vessel not being "amended" thereby. For the purpose of that immersion is not to raise the vessel from a status of uncleanliness, but to increase the degree of cleanliness.] And (he may immerse vessels) from company to company. [If he immersed vessels in order to eat his Pesach offering with one company, and then decided to eat it with a different company, so that he must immerse his vessels a second time, he may perform that immersion on yom tov.]