Rav Chama brings 4 halachot – 3 relating to whether people have the right to make others living next door\/on top of them tear down walls, houses, etc. to make their living space better. \u00a0The third relates to concern over people taking advantage of orphans and forging documents to get out of repaying a loan. \u00a0 For what things can we force members of a courtyard to share costs for? \u00a0Do residents of the town need to share the costs for a wall to protect the city and a door and lock? \u00a0Do all the residents need to partake in an equal manner or do the wealthy need to pay more or do the ones living closer to the wall need to pay more as they need the protection more? \u00a0Do talmidei chachamim need to pay at all because they are considered protected from God? \u00a02 different verses are brought to show that they do not need protection. \u00a0However Rabbi Yehuda Nesia insisted the talmidei chachamim pay.<\/p>\n