(Mishnah): If one threw from Reshus ha'Yachid to Reshus ha'Rabim or from Reshus ha'Rabim to Reshus ha'Yachid, he is liable;

If he threw from Reshus ha'Yachid to Reshus ha'Yachid and Reshus ha'Rabim is in the middle, R. Akiva obligates and Chachamim exempt.

(Gemara): Throwing is a Toldah of Hotza'ah.

Both according to Rebbi and according to Rabanan [who argue about whether or not one who throws from Reshus ha'Rabim to Reshus ha'Rabim and it passed through Reshus ha'Yachid in the middle, the first case, from Reshus ha'Yachid to Reshus ha'Rabim, he is liable] only if it rested;

[The next case,] from Reshus ha'Rabim to Reshus ha'Yachid, according to Rebbi [he is liable] even if it did not rest, and according to Rabanan only if it rested;

Source (R. Ba bar Chuna citing Rav): Rebbi obligates only for Reshus ha'Yachid with a roof. (Then it is considered full, so we say Kelutah k'Mi she'Hunchah (what is in the air is as if it is resting).)

R. Yochanan's words show that it is even if it has a roof!

R. Imi said in the name of R. Yochanan [that a Get thrown in the airspace over a woman's roof, she acquires it] if it descended to the air within the walls [around the roof, even though there is no roof above the airspace].

Question (R. Imi, to R. Yochanan): Is the Mishnah [about a Get] like Rebbi? Rebbi considers what is within walls to be tangible [and what is in their airspace is considered to be resting. R. Akiva says so even without walls, and Rabanan do not say so even with walls!]

Answer (R. Yochanan): It is like everyone. Here, Gitin [is unlike Shabbos].

Inference: [If R. Yochanan held like Rav, that Rebbi obligates only for Reshus ha'Yachid with a roof, he should have challenged R. Imi] 'Rebbi discusses with a roof, and you say [that our Mishnah is like Rebbi] without a roof?!'

Question: What is the difference between Gitin and Shabbos? (Why do Rabanan say Kelutah k'Mi she'Hunchah for Gitin, but not for Shabbos?)

Answer (R. Ila): It says about Shabbos "Lo Sa'aseh Kol Melachah.'' [If you apply Kelutah k'Mi she'Hunchah, the Melachah] is done by itself!

However, here (Gitin) the Torah said "v'Nasan b'Yadah'' - in her Reshus. (The airspace within walls is properly called her Reshus, for it is guarded.)

(Shmuel): This [argument in our Mishnah] is only within 10 Tefachim [of the ground], but above 10 [all exempt, just] it is forbidden.

R. Elazar's words show that even above 10 [they argue about whether or not one is liable];

R. Ila said in the name of R. Elazar that R. Akiva learned from the wagons [passing, and he learns throwing from passing]. Were the wagons not above 10?!

Some teach [in the coming Mishnah, which discusses passing] Keitzad (how was this), and some do not teach Keitzad. According to R. Elazar, it says Keitzad (for R. Akiva learned throwing from passing). According to Shmuel, it does not say Keitzad (R. Akiva did not learn throwing from passing. It is not connected to our Mishnah.)