Rabban Gamaliel said: A Sadducee once lived with us in the same alley in Jerusalem and father told us: “Hurry up and carry out all vessels into the alley before he carries out his and thereby restricts you”. Rabbi Judah said [the instruction was given] in different language: “Hurry up and perform all of your needs in the alley before he carries out his and thereby restricts you”.

If one of the residents of a courtyard forgot to join in the eruv, his house is forbidden both to him and to them for the taking in or for the taking out of any object. But their houses are permitted both to him and to them. If they gave their part [of the courtyard] to him, he is permitted but they are forbidden. If there were two [who forgot to join in the eruv], they restrict each other, because one may give his part and also acquire the part [of others] but two may give their parts but may not acquire the parts [of others].

When must they give away their share [courtyard or alley]? Bet Shammai says: while it is yet day, And Bet Hillel says: after dusk. One who gave away his share and then carried out an object, whether unwittingly or intentionally, he restricts [the others from carrying in the courtyard or alley], the words of Rabbi Meir. Rabbi Judah says: if he acted with intention he restricts [the others], but if unwittingly he does not restrict.

A householder who was in partnership with his neighbors: with this one in wine and with the other in wine, they need not prepare an eruv. But if his partnership was with the one in wine and with the other in oil, they must make an eruv. Rabbi Shimon says: neither in the one case nor in the other need they make an eruv.

Five companies [of men] who spent Shabbat in one hall:: Bet Shammai says: an eruv for each and every company; But Bet Hillel says: one eruv for them all. They agree that where some of them occupy rooms or upper chambers, that they must make an eruv for each and every company.

Brothers who are partners who were eating at their father’s table but slept in their own homes must each have an eruv. Hence, if any one of them forgot and did not [contribute] to the eruv, he must annul his right to his share in the courtyard. When does this apply? When they bring their eruv into some other place but if their eruv is deposited with them or if there are no other tenants with them in the courtyard they need not prepare any eruv.

Five courtyards which were each opened into the other and into an alley, and they made an eruv for the courtyards but they did not share in a shittuf for the alley, they are permitted [the use of the] courtyards but forbidden that of the alley. If they shared in a shittuf for the alley [but not in the eruv for the courtyards], they are permitted the use of both. If they made an eruv for the courtyards and they made a shittuf for the alley, and one of the tenants of a courtyard forgot to contribute to the eruv, they are permitted the use of both. If one of the residents of the alley forgot to share in the shittuf, they are permitted the use of the courtyards but forbidden that of the alley, Since an alley to its courtyards is as a courtyard to its houses.

Two courtyards, this one inside the other:If the [residents] of the inner one prepared an eruv but those of the outer one did not prepare an eruv, the inner one is permitted but the outer one is forbidden. If the [residents] of the outer one prepared an eruv but not those of the inner one, they both are forbidden. If the [residents] of each [courtyard] prepared an eruv for themselves, each is permitted on its own. Rabbi Akiva forbids the outer one because the right to walk in it prohibits it. The sages say that the right of way does not prohibit it.

If one of the [residents] of the outer courtyard forgot to participate in the eruv, the inner courtyard is permitted but the outer one is forbidden. If one of the [residents] of the inner courtyard forgot to contribute to the eruv, both courtyards are forbidden. If they gave their eruv in the same place and one [resident], whether of the inner courtyard or of the outer courtyard, forgot to contribute to the eruv, both courtyards are forbidden. If the courtyards belonged to individuals, they need not prepare any eruv.