(Mishnah): If Reuven's ox was chasing Shimon's ox, and we see Shimon's ox wounded, and Shimon says that Reuven's ox damaged it, and Reuven says that it was hurt on a stone, ha'Motzi me'Chaveiro Alav ha'Re'ayah (the one who wants to collect (Shimon) must bring proof).

If Reuven's and Shimon's oxen were chasing Levi's ox, and it was damaged, and Reuven says 'your ox damaged', and Shimon says 'no, rather, your ox damaged', they are exempt.

If both [chasing] oxen belonged to Reuven, they are liable.

If one was big (or Mu'ad), and the other small (a Tam), and Levi says 'the big one (or Mu'ad) damaged', and Reuven says 'no, the small (Tam) one damaged', ha'Motzi me'Chaveiro Alav ha'Re'ayah. (Levi collects no more than the value of the small Tam ox.)

If two oxen of Reuven damaged two of Levi's oxen, and Levi says that the big ox (or the Mu'ad) damaged the big ox, and the small ox (or the Tam) damaged the small ox, and Reuven says oppositely, ha'Motzi me'Chaveiro Alav ha'Re'ayah.

(Gemara - R. Yudan) Question: What does Beis Din rule [if no proof is brought? Does he receive like the damager says? Or, since the victim claimed oppositely, he admitted that the damager does not owe like he says, so he is totally exempt?]

Answer: We learn from the following [Tosefta]. If two threw two rocks and broke two flasks, one of wine and one of oil, and this one says 'I broke [the flask] of wine' (it is cheaper) and this one says 'I broke of wine', both of them pay of wine. (RIDVAZ, MEICHAL HA'MAYIM - we do not say that since he claimed oppositely, he admitted that the damager does not owe like he says, for witnesses saw that each broke one.)

Note: NESIVOS YERUSHALAYIM and MEICHAL HA'MAYIM say that the victim has a Safek claim against each - perhaps you broke the barrel of oil. If so, how can we learn from here to our Mishnah, in which he claims Vadai?! Perhaps also our Mishnah means that he claims 'perhaps the Mu'ad gored the big one...' (PF)

If one was empty and one was full, and this one says 'I broke the empty one' and this one says 'I broke the empty one', both of them pay for the empty one.

If they broke one barrel, and this one says 'you broke it' and this one says 'you broke it', both of them are exempt.