Study Eruvin folio 10A with parallel Hebrew-English text, traditional commentary, and modern study tools. Free access to Babylonian Talmud online.
The Talmud answers: This Mishnah is in accordance with the opinion of R' Yehuda HaNasi, who said that in order to permit carrying in a courtyard that was breached, we require two upright boards, one on either side of the breach. As it was taught in a baraita: If a courtyard was breached and opens i
The Talmud rejects this entire explanation: What is this comparison? Granted, if you say that the legal status of a side post that is visible from the outside but appears to be even with the wall from the inside is not considered like that of a side post; and that R' Yehuda HaNasi holds in accordanc
However, if you say that the legal status of a side post that is visible from the outside but appears to be even with the wall from the inside is considered like that of a side post; and that R' Zeira’s and Ravina’s explanations are accepted as halakha; and that R' Yehuda HaNasi does not hold in acc
Whichever way you look at it, there is a difficulty: If the baraita is coming to permit one to carry in the large courtyard, then a width of 10 cubits and two handbreadths suffices. These two handbreadths can be considered the upright boards that render the courtyard fit for one to carry within it.
Rather, can we not conclude from the baraita that a side post that is visible from the outside but appears to be even with the wall from the inside is not considered to have the legal status of a side post? The Talmud concludes: Indeed, conclude from this.