Study Eruvin folio 43A with parallel Hebrew-English text, traditional commentary, and modern study tools. Free access to Babylonian Talmud online.
for they are only made to keep the water out; that is to say, a boat’s walls are not designed to turn it into a place of residence, but to protect it from the water. Therefore, they do not have the status of partitions made for the purpose of residence.
The Talmud asks: As for Rabba, what is the reason he did not state his opinion in accordance with the opinion of R' Zeira? The Talmud answers: With regard to a boat that is moving, all agree, i.e., even R' Yehoshua and R' Akiva, that one is permitted to walk about the entire boat. They disagree on
Rav Naḥman bar Yitzḥak said: The Mishnah is also precise in its implication that the tanna’im do not disagree with regard to a moving boat. The Talmud asks: From where is this implied? From that which is taught: There was an incident where all of these rabbis were coming from Pelandarsin, and their
Rav Naḥman bar Yitzḥak explains: Granted, if you say that they do not disagree with regard to a moving boat, that is why it is taught that they sought to be stringent with themselves, i.e., they wished to practice stringency although they were under no obligation to do so, as they were concerned tha
But if you say that they disagree even in the case of a boat that is moving, this phrase: Sought to be stringent, is problematic, for the Mishnah should not refer to a desire to be stringent, as according to their opinion it is an outright prohibition.