(R. Yosi ben Chanina): The case where the second mixture is prohibited is when it fell into a number of places of Chulin (as in each place we are concerned that the Terumah fell there and prohibited it); but if it all fell in one place, even R. Eliezer agrees.

(R. Yitzchak): Even if it all fell in one place, the same disagreement applies.

(Chilfai): R. Eliezer says that the Chulin in the first mixture cannot combine to permit the second mixture.

Question: Didn't R. Elazar also say (earlier Chulin 84 (w)) that according to the Rabbanan, the Chulin in the second mixture does not combine; so what is the difference between R. Eliezer and Rabbanan?

Answer: That's a stringency that applies only when a Se'ah that symbolically represents the Terumah, was taken out from 100 Se'ah of Chulin. (Since it's considered actual Teurmah, it needs a full 100 parts Chulin in the second mixture to annul it.)

Question: Perhaps once the Terumah was annulled in the first mixture in 100 Chulin, we should be lenient...?

Answer: Chilfai follows R. Yochanan (rather than R. Elazar), who said earlier, that if a Se'ah of Terumah fell into 100 of Chulin and he took out a Se'ah and it then fell into another pile of Chulin, it is annulled in a majority.

(Baraisa): In that case, if there is a majority of Terumah, it is prohibited. And if a person then adds enough Chulin for it to become the majority, he is considered to have intentionally annulled a prohibited item and it is prohibited.

Question: If a Mikveh contained exactly 40 Se'ah and a person added a Se'ah of fruit juice and then removed a Se'ah, the Mikveh remains valid. Until when is it still valid?

Answer (R. Isi citing R. Mana bar Tanchum/ R. Abahu citing R. Yochanan): Until most of the Mikveh is fruit juice (i.e. if he added 21 Se'ah).

Question: But here you said that one may not intentionally annul it...?

Answer: There, since there's already a majority of valid water and the Mikveh is valid, it is permitted to add fruit juice to it. Here, each Se'ah needs 100 Se'ah of Chulin to annul it.

(R. Yosi): This shows that if a prohibited item is already annulled on a Torah level, if more of it is added, it is reawakened to combine with the new addition and prohibits.

(The Mishnah taught (Chulin 84(h)) that if a Se'ah of Terumah fell into 100 Se'ah of Chulin and he didn't manage to remove a Se'ah before another Se'ah of Terumah fell in; it is prohibited (to a non-Kohen, since we view it as if they both fell together and there wasn't enough Chulin to annul them). R. Shimon permits it.) R. Shimon says that the second Terumah is annulled in 100 since the first Se'ah was already annulled as soon as he knew about it. But Rabbanan say that until he removed a Se'ah from the first mixture, the Terumah is still considered present.

(Baraisa): If a Se'ah of Tamei Terumah fell into 100 of Tahor Chulin, the Yisrael could say to the Kohen, "I owe you the value of firewood (since the Terumah that fell in was Tamei and only usable for burning). Take the value of your wood.''

The Kohen could respond (that it isn't just firewood as), "If a Se'ah of Tamei Terumah falls into less than 100, does it not prohibit the pile; but on the other hand, could firewood prohibit a pile?! And won't you be giving the Se'ah to a Kohen (rather than eating it yourself), and will he merely give you its value as firewood?''

What's the Halacha? He gives him its value as firewood and the rest is divided between them.

A person once dropped his barley into someone's wheat. The case came before R. Yudah bar Shalom and he said, "The wheat owner should give him the value of the barley and they should divide the difference in the value of the barley from before and after it fell in.''