If the residents of a courtyard and the residents of a gallery forgot to make an eruv, whatever is ten fists high [belongs] to the gallery; less than that, to the courtyard. The embankment around a pit or a rock which is ten fists high [belongs] to the gallery; less than that, to the courtyard. To what do these words apply? To that which is near; but that which is at a distance, even if it is ten fists high, [belongs] to the courtyard. And what is [considered] near? Whatever is not four fists away.

If one places his eruv in a gatehouse, a colonnade or a gallery, the eruv is not valid; and one who lives there does not restrict it. In a silo, barn, woodshed or storehouse, the eruv is valid; and one who lives there restricts it. R’ Yehudah says: If the owner retains a holding there, he does not restrict him.