(Mishnah): One who makes a dough from wheat and rice, if it has the taste of grain, it is obligated [in Chalah] and one is Yotzei with [such Matzah] on Pesach. If it does not have the taste of grain, it is not obligated, and one is not Yotzei with it on Pesach.

If one takes Se'or from a dough that its Chalah was not taken, and puts it in a dough that its Chalah was taken - if he has Parnasah elsewhere to fix it, he separates according to the calculation [of how much Chalah should be taken for the Se'or]. If not, he takes one [Chalah] for everything (Tevel forbids any amount, and it makes the entire dough Tevel).

Similarly, if harvested olives [which must be tithed] became mixed with Nikuf olives (of Pe'ah, which the Oni knocked down from the tree; they are exempt from Ma'aseros), or harvested grapes became mixed with Olelos grapes (which are exempt) - if he has Parnasah elsewhere to fix it, he separates according to the calculation [of how much Tevel]. If not, he takes Terumah and Terumas Ma'aser for everything (we consider all of it like Tevel), and other Ma'aser and Ma'aser Sheni according to the calculation.

If one takes Se'or from a dough of wheat, and puts it in a dough of rice - if it has the taste of grain, it is obligated in Chalah. If not, it is exempt from Chalah.

Question: If so, why did they say that Tevel forbids any amount?

Answer: That is Min b'Mino, but Min b'Eino Mino, [it forbids only if it] gives taste.

(Gemara): Our Mishnah is unlike R. Shimon ben Gamliel, for R. Shimon ben Gamliel says, it is never obligated in Chalah unless there is a Shi'ur of grain.

(R. Yakov bar Idi citing Reish Lakish): The Halachah follows R. Shimon ben Gamliel.

(R. Heila): Both according to Rabanan here (Eretz Yisrael), and Rabanan there (in Bavel), they say [that it is obligated in Chalah] only if it is mostly grain and it has the taste of grain.

(Rav Huna): If it has the taste of grain, even if it is not mostly grain [it is obligated].

Question (against Rav Huna - Beraisa): If one mixed in other species, it is exempt unless it is mostly grain and it has the taste of grain.

Answer: He explains that to discuss other species (not rice. Rav Huna discussed only rice with grain.)

Question (against R. Heila - Mishnah): If one takes Se'or from a dough of wheat, and puts it in a dough of rice - if it has the taste of grain, it is obligated in Chalah. If not, it is exempt.

Answer: [Really, also a majority of grain is required. Here,] because it is after [it was already obligated in the first dough] Tevel forbids any amount Min b'Mino, and Lo b'Mino, if it gives taste. (We explained this like SEDEI YEHOSHUA, R. ISAR ZALMAN MELTZER.)

R. Yosi was carrying R. Ze'ira on his shoulder, and he heard the voice of R. Heila sitting and teaching 'R. Yochanan says, the taste of grain, even if it is not mostly grain. R. Yisa says in the name of R. Yochanan, it must be mostly grain and it has the taste of grain.'

R. Ze'ira: He switched [R. Yisa's] opinion! We have a Siman - R. Yisa holds like Rav Huna [who said that the taste of grain suffices. (We explained this like SHA'AREI TORAS ERETZ YISRAEL. R. Yisa is R. Asi of the Bavli, a Talmid of R. Yochanan. R. Yosi was a Talmid of R. Ze'ira. He would not have his own tradition of R. Yochanan's opinion, and his Rebbi (R. Ze'ira) would not discuss a Siman for his Talmid's opinion! - PF)