(Mishnah): 'Harei Alai ki'Terumah' - if he vowed (intended for) Terumas ha'Lishkah, it is forbidden.

Inference: If [he vowed about] Terumah of [Lachmei] Todah (the Kohen takes one loaf of each of the four kinds), he is permitted. (Its Isur to a Zar is not due to making it Hekdesh.)

(Mishnah): If [he vowed about] Terumah of grain, he is permitted.

Inference: If [he vowed about] Terumah of Todah, he is forbidden!

Contradiction: Here you say that [Terumah of Todah], he is forbidden, and here you say he is permitted!

Answer: We learn from the following. Like Chalah of Aharon and his Terumah, he is permitted.

Inference: If he referred to Terumah of Todah, he is forbidden!

Chachamim say, Stam Terumah in Yehudah, he is forbidden. In Galil, he is permitted, for Bnei Galil do not know Terumas ha'Lishkah.

Inference: If they knew, Stam he would be forbidden.

Stam Cherem in Yehudah is permitted, and in Galil he is forbidden, for Bnei Galil do not know Cherem of Kohanim.

Inference: If they knew, Stam he would be permitted!

Contradiction: Here you say (infer) that [Stam] he is permitted, and here you say he is forbidden!

Answer #1 (R. Elazar): These [clauses] are of two Tana'im (they argue).

Answer #2 (R. Yirmeyah): They are like one Tana. He holds like the opinion that Stam Cherem is to Bedek ha'Bayis. However, according to the opinion that Stam Cherem is to Kohanim, even in Galil it would be permitted. (I.e. in Yehudah they hold that Stam Cherem is to Kohanim, and in Galil it is to Bedek ha'Bayis.)

(R. Yosi citing R. Heila): In Galil, since they are used to the Cherem of Achan, you say that he is forbidden. In Yehudah, since they are not used to the Cherem of Achan, you say that he is permitted. (TAL TORAH - because Achan was from Yehudah, Bnei Yehudah avoided Cherem Bedek ha'Bayis, for it recalls disgrace of their Shevet.)

Note: The Mishnah said that in Galil he is forbidden, for people of Galil are not familiar with Cherem of Kohanim! I.e. because they are used to the Cherem of Achan, they do not think about Cherem of Kohanim. The idea for this Perush came from RIDVAZ.