כופין בני העיר זה את זה

They compel [a partner in a courtyard to contribute to] the building of a gate-house and a door for the courtyard. Rabban Shimon ben Gamaliel says: “Not all courtyards are fit for a gate-house.” They compel [a resident of the town to contribute to] the building of a wall for the town and double doors and a bolt. Rabban Shimon ben Gamaliel says: “Not every town is fit for a wall.” How long must a man dwell in a town to count as one of the men of the town? Twelve months. If he has purchased a dwelling place he immediately counts as one of the men of the town.

MISHNA: The residents of a courtyard can compel each inhabitant of that courtyard to financially participate in the building of a gatehouse and a door to the jointly owned courtyard. Rabban Shimon ben Gamliel disagrees and says: Not all courtyards require a gatehouse, and each courtyard must be considered on its own in accordance with its specific needs. Similarly, the residents of a city can compel each inhabitant of that city to contribute to the building of a wall, double doors, and a crossbar for the city. Rabban Shimon ben Gamliel disagrees and says: Not all towns require a wall. With regard to this latter obligation, the mishna asks: How long must one live in the city to be considered like one of the people of the city and therefore obligated to contribute to these expenses? Twelve months. But if he bought himself a residence in the city, he is immediately considered like one of the people of the city. GEMARA: The Gemara asks: Is this to say that making a gatehouse is beneficial? But wasn’t there that pious man, with whom the prophet Elijah was accustomed to speak, who built a gatehouse, and after-ward Elijah did not speak with him again? The objection to the building of a gatehouse is that the guard who mans it prevents the poor from entering and asking for charity. The Gemara answers: This is not difficult: This, the case presented in the mishna, is referring to a gatehouse built on the inside of the courtyard, in which case the poor can at least reach the courtyard’s entrance and be heard inside the courtyard; that, the story of the pious man and Elijah, involves a gatehouse that was built on the outside of the courtyard, completely blocking the poor’s access to the courtyard’s entrance. And if you wish, say instead that in both cases the gatehouse was built outside the courtyard, and yet this is not difficult: In the one case, there is a door to the gatehouse, so that the poor cannot be heard inside the courtyard, while in the other case there is no door. Or if you wish, say that in both cases there is a door, and still this is not difficult: In the one case, there is a key needed to open the door, and the key is not available to the poor people, whereas in the other case, there is no key needed. Or if you wish, say that in both cases there is a key needed, and even so this is not difficult: In the one case the key is on the inside, so that the poor cannot reach it, while in the other case of the mishna, the key is on the outside. § The mishna teaches that the residents of a courtyard can compel each inhabitant of that courtyard to financially participate in the building of a gatehouse and a door to the jointly owned courtyard. It is taught in a baraita that Rabban Shimon ben Gamliel says: Not all courtyards require a gatehouse. Rather, a courtyard that adjoins the public domain requires a gatehouse to prevent people from peering in. But a courtyard that does not adjoin the public domain does not require a gatehouse. The Gemara asks: And why don’t the Rabbis make this distinction? The Gemara answers: Even if a courtyard does not adjoin the public domain, people in the public domain sometimes are forced toward the courtyard due to crowding in the public domain, and come and enter the courtyard. § The mishna teaches that the residents of a city can compel each inhabitant of that city to contribute to the building of a wall, double doors, and a crossbar for the city. The Sages taught in a baraita: The residents of a city can compel each inhabitant of that city to build double doors and a crossbar for the city. And Rabban Shimon ben Gamliel says: Not all cities require a wall. Rather, a city that adjoins the state border requires a wall, whereas a city that does not adjoin the state border does not require a wall. The Gemara asks: And why don’t the Rabbis make this distinction? The Gemara answers: Even if a city does not adjoin the border, it sometimes happens that invading troops come into the area. Therefore, it is always good for a city to be protected by a wall. With regard to this issue, Rabbi Elazar asked Rabbi Yoḥanan: When the residents of the city collect money to build a wall, do they collect based on the number of people living in each house, or perhaps they collect based on the net worth of each person? Rabbi Yoḥanan said to him: They collect based on the net worth of each person, and Elazar, my son, you shall fix nails in this, i.e., this is an established halakha, and you must not veer from it. There are those who say that Rabbi Elazar asked Rabbi Yoḥanan: When they collect money to build a wall, do they collect based on the proximity of the houses to the wall, so that those people who live closer to the wall pay more? Or perhaps they collect based on the net worth of each person. Rabbi Yoḥanan said to him: They collect based on the proximity of the houses to the wall, and Elazar, my son, you shall fix nails in this.