(Mishnah): If a man was chopping wood in a Reshus ha'Rabim and damaged in [another's] Reshus ha'Yachid, or vice- versa, or was chopping in a Reshus ha'Yachid and damaged in another's Reshus ha'Yachid, he is liable [four damages, but not Boshes, which is only if he intended to harm].

(Gemara - R. Yosi ben Chaninah): If one was standing and chopping wood in his Chatzer, and a worker entered to claim his wage, and a piece of the wood was strewn and damaged him, he is liable. If he died, he is not exiled;

Question: R. Chiyah taught that he is exempt!

Answer: They do not argue. R. Yosi discusses when he saw [the victim], and R. Chiyah discusses when he did not see him.

Question: If [R. Chiyah exempts only when] he did not see him, since he said "enter'', he should be liable. However, a Beraisa teaches that R. Chiyah exempts!

Answer: Since he said "enter'', [the one who enters] must guard himself.

Some want to say [unlike R. Chiyah] that since he said "enter'', it becomes like a Chatzer of partners (they are liable for damages);

(R. Yochanan citing R. Yanai): Partners can acquire from each other in a jointly owned Chatzer, and each is liable for damage to the other.

Question: Didn't Rav say that he filled the entire [width of] Reshus ha'Rabim? (If not, he would collect from one who broke his Kli, and he would be exempt if someone was damaged through his Kli. Here,) did he fill Reshus ha'Rabim?! (The victim could have gone elsewhere!)

Answer: Since it is normal for one to go in the Chatzer, it is as if he filled the entire Chatzer.

(Mishnah): If two Tam oxen damaged each other, they (i.e. whichever damaged more) pay half the excess damage. If they are Mu'ad, they pay all the excess damage;

If one is Tam and one is Mu'ad, if [the greater damage was] the Mu'ad to the Tam, it pays all the excess damage;

If [the greater damage was] the Tam to the Mu'ad, it pays half the excess damage.

Similarly, if two men damaged each other, they (whoever damaged more) pay all the excess damage.

If a man damaged a Mu'ad, and the Mu'ad damaged the man, each other, they pay all the excess damage.

If a man damaged a Tam and the Tam damaged the man, if the man damaged the Tam more, he pays all the excess damage;

If the Tam damaged the man more, it pays half the excess damage;

R. Akiva says, even a Tam that damaged a man pays all the excess damage.

If an ox worth 100 gored an ox worth 200, and the carcass is worthless, the victim takes the ox [that gored].

R. Meir: If an ox worth 200 gored an ox worth 200, and the carcass is worthless, in this case the Torah said "they will sell the live ox and split the money.''

R. Yehudah: You fulfilled that verse, but not "also the dead ox they will split''!

What is [the case of this verse]? An ox worth 200 gored an ox worth 200, and the carcass is worth 50. Each gets half the live ox and half the dead ox.

(Gemara -Mishnah): If an ox worth 100 gored an ox worth 200, and the carcass is worthless, the victim takes the ox.

He gets only half [the loss due to] the wounding. Therefore (since a Tam pays only mi'Gufo), if the ox [that gored] died or weakened, he gets only that ox.

If an ox worth 100 gored an ox worth 200, and weakened it (decreased its value) 50 Zuz. If the latter returned and wounded it three gold Dinarim (75 Zuz), the latter pays the former half a gold Dinar (half the excess damage).

If an ox worth 200 gored an ox worth 200 [and decreased it 50], and it improved and it is worth 400, and had it not gored it, it would be worth 800 Zuz -

If it improved before it stood in Beis Din (to appraise the damage, the victim) receives only like at the time of the damage (25). If it weakened, he receives only like at the time it stood in Beis Din.

Correction (R. La): The Beraisa should say 'if the damager improved - if it improved before it stood in Beis Din, [the victim] receives only like at the time of the damage. (We do not say that he became a partial owner at the time of the damage, and his share improved.) If it weakened, he receives only like at the time it stood in Beis Din.' (He became a partial owner at the time of the damage, and his share decreased - MAHARA FULDA, SEDEI YEHOSHUA.)

Question: What is R. Meir's reason?

Answer: It says "they will sell the live ox and split the money.''

Question: How does R. Meir fulfill "also the dead ox they will split''?

Answer: This teaches that he loses half the damage, and he loses half the damage. (We explained this like MAHARA FULDA.)