Shabbat 11B

וכן בגת.

and the same is true in the wine press.

איבעיא להו: כרמלית מאי? אמר אביי: היא היא. רבא אמר: היא גופה גזירה, ואנן ניקום ונגזור גזירה לגזירה?

In light of the halakha that was taught in this Mishnah a dilemma was raised before the rabbis: What is the legal status of a karmelit in this matter? Is it permissible to stand in one domain and drink from a karmelit or not? Abaye said: That case is equal to that case, i.e., the same way that the rabbis prohibited drinking from the private domain to the public domain and vice versa, so too, they prohibited drinking from the karmelit to another domain. Rava said: It is not prohibited. It, the prohibition to carry between a karmelit and another domain, itself is merely a rabbinic decree. And will we arise and issue one decree to prevent violation of another decree? Although the rabbis prohibited doing so in one of the domains by Torah law, i.e., the public and the private domains, a similar decree was not issued in a karmelit, which is a domain by rabbinic law.

אמר אביי: מנא אמינא לה ⁠— דקתני: ״וכן בגת״. מאי גת? אי רשות היחיד ⁠— תנינא! אי רשות הרבים ⁠— תנינא. אלא לאו כרמלית.

Abaye said: From where do I say that halakha, i.e., that the decree applies to a karmelit? From that which we learned at the end of the Mishnah in tractate Eiruvin: And the same is true in the wine press. The question arises: What is the status of the wine press in terms of the domains of Shabbat? If you say that it is the private domain, we already learned that in the Mishnah. If it is the public domain, we already learned that as well. Rather, isn’t this press a karmelit? Apparently, a karmelit was also prohibited in the Mishnah.