(Beraisa - Rebbi): Tum'ah is written three times in the Parshah [of Sotah -] one [teaches that she becomes forbidden] to her husband, one [teaches Isur] to the Bo'el, and one for Terumah.

Question: [Why do we need a verse to teach that she becomes forbidden] to Terumah? Do we find a woman forbidden to her husband, and permitted to Terumah?!

Answer: Why not?! If a Bas Kohen married a Yisrael and was raped, is she not permitted to her husband and forbidden to Terumah (even she will be widowed?! Likewise, a woman could be forbidden to her husband, and permitted to Terumah! Therefore, we need a verse to teach that adultery forbids her to Terumah.)

Rebuttal: We do not find a woman forbidden to her husband, and permitted to Terumah. (Sometimes she is forbidden to Terumah even though she is permitted to her husband. All the more so when she is forbidden to her husband, she is forbidden to Terumah! We explained this like PNEI MOSHE.)

Correction (R. Avin): It was said that one [verse teaches Isur] to her husband, one to the Bo'el, and one to the Yavam (if her husband died, she is forbidden to do Yibum).

Support (Mishnah): If her husband dies, she does Chalitzah, not Yibum.

(R. Yakov bar Idi, in front of R. Yonason - Beraisa): "V'At Ki Satis Tachas Ishech" excludes Ones (if she was raped).

Question: How do we learn from this?

Answer (R. Yonason): Just like "Tachas Ishech" is willingly, also here it is willingly.

A Sotah - just like she becomes forbidden to her husband, she becomes forbidden to the Bo'el. Just like she is forbidden to her husband's brother (she may not do Yibum), she is forbidden to the Bo'el's brother (if the Bo'el transgressed and married her, and he died).

Question: Perhaps just like the Tzarah of a Sotah is forbidden to the husband's brother, so she is forbidden to the Bo'el's brother!

Answer: We learn from the following [Tosefta]. If a woman's husband went overseas, and they told her 'your husband died', and she had a Yavam here, and he did Yibum, and died, and afterwards her husband returned, he is forbidden to her and permitted to her Tzarah. He is forbidden to her and permitted to his brother's wife;

Is his brother's wife not like the Tzarah of a Sotah (the 'Yibum' was really Zenus)? This teaches that Tzaras Sotah is permitted to the Bo'el's brother.

Limitation (R. Yudah): [This Tosefta] is like Rabanan there (in Bavel);

(R. Heila): It was taught there teaches that all Arayos who married do not need a Get, except for Eshes Ish [who remarried according to a ruling of Beis Din];

R. Akiva says, even Achos Ishto and Eshes Achiv. (The first Tana does not require a Get for Eshes Achiv. This shows that one who mistakenly did Yibum is not considered a Sotah.)

Question: However, according to Rabanan here [we cannot explain the Tosefta]!

(R. Chiya citing R. Yochanan): All agree that Eshes Achiv needs a Get, due to laws of Eshes Ish (the mistaken Yibum was also a case of Eshes Ish). He acquired her, and she is Ervah; Ervah exempts her Tzarah.

Answer (R. Chinena): It is even according to Rabanan here. [Just like we say that] they fined her, and they did not fine her heirs, [similarly they fined the Yevamah, and they did not fine her Tzarah].

(R. Chananyah brei d'R. Hillel): (The first Tana of the Tosefta is only like Rabanan here.) If it were like Rabanan there, [the Yavam] would be permitted to her (the Yevamah, after her husband truly died)!

(R. Ze'ira citing R. Yochanan): Tzaras Sotah is forbidden, and Tzaras Gerushah (i.e. Tzaras Machzir Gerushaso after she remarried) is permitted to her house (Yavam).

(R. Yakov bar Acha citing R. Yochanan): All Tzaros are permitted, except for Tzaras Sotah. (He discusses Tzaros of women forbidden not due to Ervah.)

(Shmuel): Gerushah (i.e. Machzir Gerushaso) herself is permitted to her house (the Yavam, even though she became forbidden to her husband).

Question: Does [R. Yochanan] argue [with Shmuel]?

Answer: (No.) Because they were discussing Tzaros, [R. Yochanan taught only about Tzaros; he] did not mention the law of] Gerushos (i.e. Machzir Gerushaso herself).

Question: Why is Tzaras Sotah forbidden?

Answer #1 (R. Yochanan): This is due to the scent of (she resembles) Ervah.

Answer #2 (Rav): It is because Tum'ah is written about her, like about Arayos (therefore her Tzarah is forbidden, just like Tzaras Ervah).

(Mishnah): In the following cases she is (forever) forbidden to eat Terumah: she says 'I am forbidden to you'; witnesses testified that she became Temei'ah; she refuses to drink; her husband refuses to make her drink; her husband had Bi'ah with her on the way [to Yerushalayim, after the seclusion].

How does he do [after warning and seclusion? Her husband] takes her to the local Beis Din. They send two Chachamim [to accompany them to Yerushalayim], lest he have Bi'ah with her on the way (which is forbidden, and would prevent the water from testing her).

R. Yehudah says, [this is not needed]. He is trusted not to have Bi'ah with her.

(Gemara): Our Mishnah is only like Mishnah Rishonah;

The Mishnah there [at the end of Nedarim] teaches, initially, they said that in three cases of women [who demand divorce, Beis Din forces the husband, and] they are divorced and receive the Kesuvah:

[A Kohen's wife says] I am Tamei [forbidden] to you (I was raped. One who willingly was Mezanah would not receive a Kesuvah. According to Mishnah Acharonah, she is not believed at all, and she is permitted even Terumah);

Shamayim is (a judge) between me and you (that you cannot have children);

I forbid myself to have Bi'ah with any Yisrael.

Rebuttal (R. Avin): We can even say that it is like Mishnah Acharonah. [There, nothing supports her claim. Here], in any case there are Raglayim l'Davar (circumstantial evidence that she was defiled).

(Beraisa): "Mi'Bal'adei Ishech" excludes when another man had Bi'ah [with you] before your husband.

(R. Ila): Just like it says "Milvad Olas ha'Boker" (Olas ha'Boker precedes other Korbanos, also here, "mi'Bal'adei Ishech" means that Bi'ah with her husband preceded Bi'ah with the Bo'el).

Question (Beraisa): Just like the water tests her (kills her if she was Mezanah), so it tests him (the Bo'el). Just like she becomes forbidden to her husband, she becomes forbidden to the Bo'el. Just like she is forbidden to her husband's brother (she may not do Yibum), she is forbidden to the Bo'el's brother;

Just like the water tests her for every Bi'ah that she has with her husband after [she had Bi'ah with] the Bo'el (her death is more painful), so it tests him (the Bo'el. This shows that the water works even if her husband had Bi'ah with her after the Zenus, unlike our Mishnah!)

Answer (R. Avin): Here (our Mishnah) discusses when [her husband] does not know [that she was secluded]. Here (the Beraisa) discusses when he knows.