With regard to a resident of the upper story who is entitled to move into the lower story, when he resides there, does he reside alone as he did at the outset when he occupied the upper story, and the owner of the house has no choice but to move out? Or perhaps they both reside there together, as the owner can say to him: I did not rent the upper story to you with the intention of being removed from my domicile.

If you say that they both reside there, when the upper-story resident uses the house, does he use it by way of its entrances, like the owner, or must he use it by way of the roofs? Must he climb the stairs and enter the upper story, and then descend to the house from there? Can the owner say: The tenant must act as he did at the outset; just as at the outset he entered by way of the roofs, now too, he must enter by way of the roofs? Or perhaps the renter can say to him: I accepted upon myself an ascent and agreed to climb the stairs to the upper story, but I did not accept upon myself an ascent and a descent, which would be necessary if I entered by way of the roofs.

If you say that the tenant can say to the owner: I did not accept upon myself an ascent and a descent, in a case where there were two upper stories, this one on top of that one, what is the halakha? The Gemara clarifies the circumstances of this case: If the floor of the higher upper story was broken, clearly he may descend and reside in the lower one, but if the floor of the lower upper story was broken, what is the halakha? Is he required to ascend the full way and reside in the higher upper story, or does he go down to reside on the ground floor?

Do we say that the owner of the house can say to the tenant: You accepted upon yourself the term: An upper story, and I have provided one for you? Or perhaps one says that the tenant accepted upon himself one ascent, but he did not accept upon himself two ascents. No answer was found for these questions, and the Gemara concludes: These dilemmas shall stand unresolved.

§ The mishna teaches: Rabbi Yosei says: The lower resident provides the ceiling and the upper resident provides the plaster. The Gemara asks: What is the word ceiling referring to in this context? Rabbi Yosei bar Ḥanina says: Mats and beams. And the Sage Setini says that Rabbi Shimon ben Lakish says: Wide wooden planks. The Gemara comments: And these two opinions do not disagree over the basic halakha; rather, this Sage rules in accordance with the custom of his locale and this Sage in accordance with the custom of his locale, and they each were describing the necessary materials for a ceiling, according to the local building conventions.

§ The Gemara relates: An incident occurred with these two people who were residing in the same house, one in the upper story, and the other one in the lower story. The plaster of the floor of the upper story broke, so that when the resident of the upper apartment would wash with water, it would run down and cause damage to the lower story. The question was: Who must repair the ceiling? Rabbi Ḥiyya bar Abba says: The upper resident repairs it, and Rabbi Elai says in the name of Rabbi Ḥiyya, son of Rabbi Yosei: The lower resident repairs it. The Gemara comments: And the following verse can serve as a mnemonic device to remember who issued which ruling: “And Joseph was brought down to Egypt” (Genesis 39:1). Rabbi Ḥiyya, son of Rabbi Yosei, indicated by Joseph, is the Sage who maintains that the owner of the lower story, indicated by: Brought down, must repair the ceiling.

The Gemara suggests: Shall we say that Rabbi Ḥiyya bar Abba and Rabbi Elai disagree with regard to the matter subject to dispute between Rabbi Yosei and the Rabbis in the mishna? The explanation of the dispute would then be as follows: According to the one who says that the upper resident repairs it, he holds that the responsibility is on the one potentially responsible for the damage to distance himself from the one whose property is potentially damaged. This accounts for the opinion of Rabbi Yosei in the mishna, who holds that the resident of the upper story must provide the plaster, because his water is clearly causing damage below. And the one who says that the lower resident repairs it, he holds like the Rabbis, who say that the responsibility is on the one whose property is potentially damaged to distance himself from the one potentially responsible for the damage.

The Gemara asks: And how can you understand it that way? Do Rabbi Yosei and the Rabbis disagree in the mishna with regard to distancing oneself from damages? But haven’t we heard them say the opposite? As we learned in a mishna (Bava Batra 25b): One must distance a tree twenty-five cubits from a pit, because its roots damage the pit, and in the case of a carob or sycamore tree, whose roots spread far, one must distance it by fifty cubits. This is the halakha whether the pit or tree is located above or to the side of the other. If the pit preceded the tree, the owner of the pit may cut down the tree and pay its monetary value. If the tree preceded the pit, then he may not cut it down. If it is uncertain whether this tree preceded that pit, and it is uncertain whether that pit preceded this tree, he may not cut down the tree.

Rabbi Yosei says: Even if the pit preceded the tree, he may not cut it down. Why is that? As this one digs in his own property, and that one plants in his own property. Consequently, the owner of the pit cannot complain about the damage, and if he wants to avoid it, he can dig his pit elsewhere. Apparently, this mishna indicates that Rabbi Yosei holds that the responsibility is on the one whose property is potentially damaged to distance himself from the one potentially responsible for the damage, and the Rabbis hold that the responsibility is on the one potentially responsible for the damage to distance himself from the one whose property is potentially damaged.

Rather, if it can be said that these amora’im disagree with regard to the issue that is the subject of the dispute between these tanna’im, then they disagree in the dispute between Rabbi Yosei and the Rabbis there, concerning the question of who is obligated to distance himself from the damage, but it has nothing to do with the dispute in the mishna here.

The Gemara asks: And with regard to what principle do Rabbi Yosei and the Rabbis of the mishna here disagree? The Gemara answers: They disagree with regard to the strength of a ceiling. The Rabbis hold that the function of the plaster is to strengthen the ceiling, and strengthening the ceiling is the obligation of the lower resident, as he is required to strengthen it. And Rabbi Yosei holds that the function of the plaster is to level out any holes, so that the surface of the ceiling will be flat, and leveling out holes it is the obligation of the upper resident, as he is required to level them out.

The Gemara challenges the above conclusion: Is that so? But didn’t Rav Ashi say: When I was in the school of Rav Kahana we would say that Rabbi Yosei concedes in a case of his arrows. Although Rabbi Yosei holds that the responsibility is on the one whose property is potentially damaged to distance himself from the one potentially responsible for the damage, that is only if the one causing the damage is not performing a direct action that is causing the damage, as in the case of the tree and the pit. But if he is performing an action that causes damage from a distance, as in this case, where the water he pours damages the resident of the lower story, he is like someone shooting arrows, who is certainly obligated to ensure that he does not cause any damage.

The Gemara answers: This is a case in which the water flow stops in one place, as the hole in the floor is not directly in the place where the water was poured, and subsequently it falls into the lower story once it flows to the opening in the floor. Consequently, even in this case, the upper resident does not directly cause the damage.

MISHNA: In the case of the house and the upper story belonging to two different people, and that house and upper story collapsed, and the owner of the upper story told the owner of the house to build the lower story in order to enable him to rebuild the upper story, and he does not want to build it, the owner of the upper story may build the house and reside in it, until the other gives him his expenses for the construction of the house, and he then rebuilds his upper story.

Rabbi Yehuda says: This one too, i.e., the owner of the upper story, who is meanwhile residing inside the property of the other, must pay him rent. Since he derived benefit by living in the house of the other, as he had no other place in which he could live, he must pay rent. This solution is therefore flawed. Rather, the owner of the upper story builds the house and the upper story, and he roofs the upper story, i.e., he completes the entire construction of the upper story, and he may then sit in the house, i.e., the lower story, until the other gives him his expenses for the building of the house, at which point he returns to his upper story. Since in any event he could have lived in the upper story, he is not considered to have derived any benefit by living in the lower story, and is not obligated to pay rent.