(Mishnah): [If one told his wife] 'this is your Get on condition that I do not return within 30 days', and he was going from Yehudah to Galil, if he reached Antiferas and returned, the Tanai is Batel (i.e. she is not divorced);

'This is your Get on condition that I do not return within 30 days', and he was going from Galil to Yehudah, if he reached Kefar Osnai and returned, the Tanai is Batel.

'This is your Get on condition that I do not return within 30 days', and he was going from Galil to Yehudah, if he was going overseas, if he reached Ako and returned, the Tanai is Batel.

If he said 'this is your Get if I will go 30 days without seeing your face', if he was constantly leaving and returning, since he was not secluded with her, it is a Get.

(Gemara) Question: About what [did he stipulate]?

Answer #1 (R. Lazar): [It is a Get if he will not return] to his house.

Answer #2 (R. Yochanan): [It is a Get if he will not return to his house, and not reach] the places [mentioned in our Mishnah].

Support (for R. Lazar - Mishnah): If he reached Ako and returned, the Tanai is Batel. (According to R. Yochanan, once he reached Ako, the Tanai is Batel. Why must it say that he returned to his house?!)

Rejection (R. Chagai): [Our Mishnah] is like the opinion that Ako is like Eretz Yisrael for Gitin.

Objection: Even if you will say that Ako is like Eretz Yisrael for Gitin, perhaps for Tenai Gitin [all agree that one who stipulates, he considers it like Chutz la'Aretz].

Note: Above (5b), the Yerushalmi derived that part of Ako is in Eretz Yisrael. We could have answered here that he went to that part of Ako! Perhaps R. Chagai holds that this is no Chidush; rather, our Tana holds that even the part in Chutz la'Aretz is like Eretz Yisrael for Gitin, and even for Tenai Gitin. (PF)

He is already forbidden to be secluded with her, lest he go 30 days without seeing her face, and it turns out that the Get preceded her son (if she becomes pregnant through the seclusion, the child was born out of wedlock).

(Mishnah): If one said 'this is your Get if I don't come within 12 months', and he died within this time, it is not a Get;

If he said 'this is your Get from now if I don't come within 12 months', and he died within 12 months, it is a Get.

If one said 'if I don't come within 12 months, write and give a Get to my wife', and they wrote the Get within 12 months and gave it after 12 months, it is not a Get;

If one said 'write and give a Get to my wife if I don't come within 12 months', and they wrote the Get within 12 months and gave it after 12 months, it is not a Get;

R. Yosi says, like this it is a Get;

If they wrote the Get after 12 months and gave it after 12 months, and the husband died - if the Get was given before he died, it is a Get. If he died before the Get, it is not a Get. If it is not known - about this they said, she is (has the stringencies of being) divorced and not divorced.

(Gemara) Question: What is R. Yosi's reason?

Answer: Because it was written before [12 months, should it be Pasul]?! It was not given before [then], and you say that it is not a Get?! (You can say so only in the Reisha, when he said to write it after 12 months. - PNEI MOSHE)

Question (R. Chiyah Rubah, to Rebbi): [If one said] 'this is your Get [if I do not come] after the Chag [what is the law]?

Answer (Rebbi): All 30 days after the Chag are like after the Chag (if he comes within then, it is Batel).

Question (R. Bivun bar Chiyah, to R. Ze'ira): [If one said] 'this is your Get [if I do not come] Erev Pesach [and he came in the 30 days before Pesach, but not on Erev Pesach, what is the law]?

Answer (R. Ze'ira): Even according to the opinion that all 30 days after the Chag are like after the Chag, all 30 days before Pesach are not like before (i.e. Erev) Pesach.

Question (R. Ze'ira, to R. Yosa): [If one said] 'Konam (is forbidden to me like a Korban) wine, that I will not taste it on Motza'ei Shabbos [what is the law]?

Answer (R. Yosa): Motza'ei Shabbos is forbidden. [The following] Erev Shabbos is permitted. The days in between, this requires [investigation].

And here (if one said 'write and give a Get to my wife on Motza'ei Shabbos', if they gave it) on Motza'ei Shabbos it is a Get. [The following] Erev Shabbos, it is not a Get. The days in between, this requires [investigation].

Note: We could have asked about one who said ''this is your Get if I do not come on Motza'ei Shabbos.' However, since it says 'on Motza'ei Shabbos, it is a Get', it is clear that this was not the question.