Eruvin 26A

שלפינהו. אזל רב פפא ורב הונא בריה דרב יהושע, נקטינהו מבתריה.

and removed the reeds, as he maintained that they were unnecessary; he regarded the entire orchard as having been enclosed for the purpose of residence, owing to the banqueting pavilion. Rav Pappa and Rav Huna, son of Rav Yehoshua, went after him and collected the reeds, so as to prevent Rav Huna bar Ḥinnana from restoring the partitions, as they were Rava’s students and wanted to enforce his ruling.

למחר איתיביה רבינא לרבא: עיר חדשה מודדין לה מישיבתה, וישנה מחומתה.

On the following day, on Shabbat, Ravina raised an objection to Rava’s opinion from a baraita which states: In the case of a new town, we measure the Shabbat limit from its settled area, from where it is actually inhabited; and in the case of an old town, we measure the Shabbat limit from its wall, even if it is not inhabited up to its wall.

איזו היא חדשה ואיזו היא ישנה? חדשה, שהוקפה ולבסוף ישבה. ישנה, ישבה ולבסוף הוקפה. והאי נמי כהוקפה ולבסוף ישבה דמי!

What is a new town, and what is an old town? A new town is one that was first surrounded by a wall, and only afterward settled, meaning that the town’s residents arrived after the wall had already been erected; an old town is one that was first settled, and only afterward surrounded by a wall. Ravina raised his objection: And this orchard should also be considered like a town that was first surrounded by a wall and only afterward settled, as it had not been enclosed from the outset for the purpose of residence. Even if a residence was later erected there, this should not turn it into a place that had been enclosed for the purpose of residence.