(Mishnah): A Shomeres Yavam, whether to one Yavam or to two Yevamim, R. Eliezer says, he can annul;

R. Yehoshua says, [he can annul] if there is one Yavam, but not if there are two;

R. Akiva says, [he cannot annul] whether there is one Yavam or two.

(Gemara) Question: According to R. Akiva, who can annul for her? (The Yevamim cannot. Can her father annul (OHR SOMAYACH Kuntres Zikah 26), i.e. if she never had Nisu'in? (PF))

Question: This that R. Avahu cited R. Yochanan to say that [if one told a woman 'you are Mekudeshes to me from now and after 30 days', and another told her 'you are Mekudeshes to me from now and after 20 days',... 'from now and after 10 days',] even Kidushin of 100 men takes effect in her, who can annul for her?

Question: This that R. Yakov cited R. Yochanan to say that [if one bought an Amah Ivriyah,] he can be Meya'ed (marry) her to his minor son, who can annul for her?

Question: This that R. Yakov bar Acha cited R. Yochanan, and R. Heila cited R. Elazar, to say that [the wife of a Cheresh or lunatic, - PNEI MOSHE] there is not even an Asham Taluy [for another who had Bi'ah with her,] who can annul for her?

(Mishnah - R. Eliezer): If a woman that one acquired for himself (Arusah), he can annul her vows, a woman that Shamayim acquired to him (i.e. through the death of his brother), all the more so he can annul her vows!

R. Akiva: No. If you say that a woman that one acquired for himself, that others have no Reshus in her (he can annul her vows), will you say so about a woman that Shamayim acquired to him, that others have Reshus in her?!

R. Yehoshua: Akiva, your words apply when there are two Yevamim. What do you answer when there is [only] one Yavam?

R. Akiva: A Yevamah is not fully [acquired] to her 'husband' (Yavam) like an Arusah is fully to her husband.

(Gemara - R. Eliezer): A woman that I had no Reshus in her before she entered my Reshus (through Kidushin), after she entered my Reshus, she is fully [acquired] to me (I can annul her vows together with her father). A woman that I had Reshus in her (a Shomeres Yavam) before she entered my Reshus (through Ma'amar), after she entered my Reshus, all the more so she should be fully [acquired] to me!

R. Akiva: No - if you will say about a woman that you had no Reshus in her before she entered your Reshus (through Kidushin), after she entered your Reshus, she is fully to you - this is because just like you had no share in her (before Eirusin), others had no share in her;

Will you say about a woman (Shomeres Yavam) that you had Reshus in her before she entered your Reshus (through Ma'amar), after she entered your Reshus, she is fully to you - [however], just like you had a share in her, others (your brothers) had a share in her!

R. Yehoshua: Akiva, your words apply to two Yevamim. What do you answer about one Yavam?

R. Akiva: Just like you do not distinguish for us between one Yavam and two Yevamim, whether he made a Ma'amar in her or did not make a Ma'amar in her (in every case there is no Misah for Bi'ah with her), also for Nedarim and Shevu'os it is so (they are the same).

R. Yehoshua: Had you been in the days of R. Elazar ben Arach [who said that Ma'amar fully acquires for other matters], could you give this answer?! (CHASDEI DAVID)

R. Akiva: If [you agree that] Ma'amar does not fully acquire, admit [to me] that he cannot annul until she enters his Reshus! (PF)