יומא נ״ו א

ten log that I will later separate shall be the first tithe; and another tenth from the rest, which equals nine log of the remaining ninety, shall be second tithe. And he redeems the second tithe with money that he will later take to Jerusalem, and he may then immediately drink the wine. After Shabbat, when he removes portions from the mixture and places them in vessels, they are retroactively designated as terumot and tithes. This is the statement of Rabbi Meir.