The place where he eats his bread, and Shmuel said: His place of sleep.

The Gemara raises an objection to Rav’s opinion from a baraita: With regard to shepherds; fig watchmen, who guard figs spread out in the field; guardsmen who sit in small guardhouses; and produce watchmen; when they customarily sleep in the city in addition to eating there, they are like the residents of the city with regard to their Shabbat limit, even though they were in the field when Shabbat began. However, when they customarily sleep in the field, even though they eat in the town, they have only two thousand cubits in each direction from the places where they sleep. This seems to contradict the opinion of Rav, who maintains that a person’s place of dwelling is determined by where he eats, not by where he sleeps.

The Gemara answers: There, in the case of the people in the field, we are witnesses, i.e., it is clearly evident, that if people would bring them bread there, to the place where they sleep, it would be more convenient for them. Fundamentally, however, a person’s dwelling place is determined by where he eats, rather than where he sleeps.

Rav Yosef said: I have not heard this halakha stated by Rav. An illness had caused Rav Yosef to forget his studies. His student, Abaye, said to him: You yourself said it to us, and it was with regard to this that you said it to us: With regard to brothers who were eating at their father’s table and sleeping in their own houses in the same courtyard, a separate contribution to the eiruv is required for each and every one of them. And we said to you: Can one learn from here that a person’s place of sleep determines the location of his Shabbat residence? And you said to us in this regard that Rav Yehuda said that Rav said: They taught this mishna with regard to brothers who receive a portion from their father and are therefore considered as though they eat at his table, whereas in actual fact they eat their meals in their own homes.

The Sages taught in a baraita: With regard to one who has five wives who receive a portion from their husband while each living in her own quarters in the courtyard, and five slaves who receive a portion from their master while living in their own lodgings in the courtyard, Rabbi Yehuda ben Beteira permits in the case of the wives, i.e., they do not each have to contribute separately to the eiruv, as they are all considered to be residing with their husband. And he prohibits in the case of the slaves, meaning that he holds that as they live in separate houses, each is considered as residing on his own.

Rabbi Yehuda ben Bava permits in the case of the slaves, as a slave necessarily follows his master, and he prohibits in the case of the wives, as each woman is significant in her own right, and is not totally dependent on her husband.

Rav said: What is the rationale for the opinion of Rabbi Yehuda ben Bava? As it is written: “But Daniel was in the gate of the king” (Daniel 2:49). The verse refers to Daniel’s function rather than to an actual location, indicating that wherever Daniel went, it was as though he was in the king’s gate. The same applies to any slave vis-à-vis his master.

The Gemara proceeds to clarify various aspects of this issue, starting with a summary of what has already been stated. The halakha is obvious in the case of a son with his father, as we stated it above the mishna. A wife with her husband and a slave with his master are subject to the dispute between Rabbi Yehuda ben Beteira and Rabbi Yehuda ben Bava. With regard to a student who lives with his master in the same courtyard and receives his sustenance from him, what is his status with regard to eiruv?

Come and hear a resolution to this question: As Rav, when he was in the school of Rabbi Ḥiyya, said: We do not need to establish an eiruv, as we are dependent upon the table of Rabbi Ḥiyya. And similarly, Rabbi Ḥiyya himself, when he was in the school of Rabbi Yehuda HaNasi, said: We do not need to establish an eiruv, as we are dependent upon the table of Rabbi Yehuda HaNasi.

Abaye raised a dilemma before Rabba: With regard to five people who live in the same courtyard and collected their eiruv, when they take their eiruv elsewhere in order to merge their courtyard with a different one, is one contribution to the eiruv sufficient for all of them, or do they need a separate contribution to the eiruv for each and every one of them? Rabba said to him: One contribution to the eiruv suffices for all of them.

Abaye asked: But in the case of brothers, who are comparable to people who collected their eiruv, the mishna nonetheless teaches: They require a separate eiruv for each and every one of them. Rabba responded: With what are we dealing here? We are dealing with a case where there are other residents, in addition to the father and his sons, living with them. In that case, since these additional residents render carrying in the same courtyard prohibited unless they join in an eiruv, those brothers also render it prohibited for one another to carry in the other courtyard unless each of them contributes to the eiruv.

The Gemara comments: So too, it is reasonable to understand, as the mishna teaches: When do they state this halakha? When they bring their eiruv elsewhere in the courtyard. But if their eiruv was coming to them, or if there are no other residents with them in the courtyard, they do not need to establish an eiruv, as they are considered like a single individual living in a courtyard. Learn from this that the preceding ruling refers to a situation where they shared the courtyard with other residents.

The Gemara addresses a similar issue with regard to a joining of Shabbat boundaries: Rav Ḥiyya bar Avin raised a dilemma before Rav Sheshet: With regard to students in their master’s house who eat their bread in their houses in the field [baga] and then come and sleep in their master’s house, when we measure their Shabbat limit for them, do we measure it for them from their master’s house, where they sleep, or do we measure it for them from the field, where they eat? He said to him: We measure it from their master’s house.

Rav Ḥiyya bar Avin asked: But in the case of one who deposits his eiruv, which establishes the location of his meal, within two thousand cubits, and then goes back and sleeps in his house, we measure his Shabbat limit from his eiruv. This implies that the determining factor is where he eats, rather than where he sleeps.

The Gemara answers: In that case we are witnesses, and in this case we are witnesses, i.e., in both cases the person’s intentions regarding his place of residence are clearly evident. In that case, where the person deposits his eiruv, we are witnesses that if he could reside there, at the site of his eiruv, it would be better for him, i.e., if he could spend the night there he would do so, since he wishes to continue from that place onward on the following day. And in this case of the students in their master’s house, we are witnesses that if people would bring them bread in their master’s house, enabling them to eat there, it would be better for them. Consequently, it is considered their place of residence.

Rami bar Ḥama raised a dilemma before Rav Ḥisda: With regard to a father and his son, or a master and his student, are they considered as many people or as individuals? The practical import of the question is as follows: If they lived together in a courtyard that was within another courtyard, are they considered as many people, who require an eiruv in order to render it permitted to carry in the outer courtyard, or do they not require an eiruv, as they are treated as an individual, who does not render carrying in the outer courtyard prohibited? Is their alleyway rendered permitted for carrying through a side post and a cross beam, like one that has multiple residents, or is it not rendered permitted for carrying through a side post and a cross beam?

Rav Ḥisda said to him: You have already learned this in the following baraita: With regard to a father and his son or a master and his student, when there are no other residents with them, they are considered like individuals, and they do not need to establish an eiruv, and their alleyway becomes permitted for carrying through a side post and a cross beam without a merging of alleyways.

MISHNA: If five courtyards open into one another and also open into an alleyway, the following distinctions apply: If the residents of the courtyard established an eiruv in the courtyards and did not merge the courtyards that open into the alleyway, they are permitted to carry in the courtyards and they are prohibited to carry in the alleyway. The eiruv they established cannot also serve as a merging of the courtyards that open into the alleyway.