Study Bava Metzia folio 9A with parallel Hebrew-English text, traditional commentary, and modern study tools. Free access to Babylonian Talmud online.
they have both acquired the animal in that manner. R' Yehuda says: Actually, one acquires an animal only through pulling in the case of a camel or driving in the case of a donkey, as that is the manner in which they are normally directed.
In any event, it is taught in the baraita: Or one who was pulling and one who was driving, which indicates that pulling and driving are indeed effective modes of acquisition, but sitting in a riding position on an animal is not.
The Talmud rejects this inference: The same is true with regard to even sitting in a riding position on an animal; it is an effective mode of acquisition. And the reason that the baraita teaches specifically the modes of pulling and driving is only to exclude the opinion of R' Yehuda, who says that
The Talmud asks: If that is so, then let the first tanna combine the cases and teach them as follows: With regard to two people who were pulling or driving either a camel or a donkey, they each acquire the respective animal. The fact that this wording is not used indicates that the first tanna doe
The Talmud modifies its response: There is one manner of acquisition by which the first tanna concedes to R' Yehuda that one does not acquire the animal if one employs it, and it is unclear what manner that is. Some say that by pulling a donkey one does not acquire it, as donkeys tend to not move at