Siman - Eruvin Daf 92
- A churvah between two chatzeiros
The Gemara discusses a case of, שתי חצרות וחורבה אחת ביניהם - two chatzeiros and a destroyed building in between, and the members of one chatzeir made an eruv for itself to carry in and out of their houses, and one did not. Rav Huna says that we give the rights to use the churvah on Shabbos to the one which did not make an eruv. The reason that we don’t give it to the ones that made an eruv is because the people who live there might bring things out from their houses to their chatzeir and from there bring them into the churvah.
Chiya bar Rav, on the other hand, says that both chatzeiros are assur to carry to and from the churvah. Rashi explains that because of the concern that the ones who made an eruv will bring things into the chatzeir and then from there into the churvah, we forbid even the people who did not make an eruv to carry into the churvah.
- A big roof next to a small roof
The next Mishnah states that גג גדול סמוך לקטן - if a big roof is next to a small roof, הגדול מותר והקטן אסור - then the big roof is permitted to carry items onto it from inside the house, and the small one is forbidden to do so. In general, two roofs that are next to each other would forbid each other from carrying onto them. However, in this case, the big roof is completely surrounded by a walls based on גוד אסיק, with an opening less than ten amos into the small roof. Therefore, the opening is not considered a breach which would thereby connect the two roofs, but rather it is considered a doorway. On the other hand, one is forbidden to carry from inside the house onto the small roof, because it only has three walls and is נפרץ למקום האסור לה – completely open on the fourth side to an area that is forbidden to it, that being the larger roof.
- Nine people in a large chatzeir making a minyan with one person in a small chatzeir
The Gemara mentions other cases that are similar to the Mishnah’s case of large chatzeir that was breached into a small one. In all of the cases the Gemara mentions, דיורי גדולה בקטנה ואין דיורי קטנה בגדולה - the big chatzeir has power over the small chatzeir and pulls the small chatzeir towards it, whereas the small chatzeir has no power over the big chatzeir, and cannot pull the big chatzeir towards it. For example, if there are nine people in a big chatzeir and one person in an adjacent small one, then since the small chatzeir is “pulled toward” the big one, they combine for a minyan. However, if there are nine people in the small one and one person in the big one, they do not combine since we cannot say that the nine, who are the majority, will be “pulled toward” the one person.
