(Mishnah): If one rented out a house to his friend and it fell down, he must replace it.

If it was small, he should not rebuild it large and vice-versa. If there was one, he should not build two and vice-versa. He should not reduce the number of windows nor increase them unless they both agree to it.

(Gemara) - Raish Lakish: (When the Mishnah taught that no changes may be made, it is when) he rebuilds in the same location. (However, in another location, he may make changes).

R. Yochanan: When he said, "I am renting to you a house like this''.

Question: If one rented out a house to his friend and now wishes to sell the house...

Answer #1 - R. Ami: It did not include if he was dying of starvation. (The rental could not have precluded the possibility that if the owner needs to sell the house in order to have sustenance, that he would be able to do so.)

R. Zeira/R. Hila: The owner may sell the house, but it is as if the owner told the buyer that he must allow the rental contract to be completed.

Such a case came before R. Nisi and he did not accept (this opinion and he said that the buyer can force the renter to leave).

Question: Does R. Nisi disagree (with them or was this a unique case)?

Answer: The house owner's daughter had been taken captive by a Roman and he needed to raise the ransom money. This is why R. Nisi ruled like Ami.

(Mishnah): If a sharecropper (who receives a field in Arisus, meaning that he takes a percentage of the earnings of the field for that year) received a field (to cultivate)...

In a place where the custom is to harvest, he must harvest; to rake, he must rake; to plough after harvesting, he must plough after harvesting; everything follows the custom of that locality.

Just as they (the owner and the sharecropper) divide the produce, they also divide the straw and stubble. Just as they divide the wine, they also divide the vine twigs and sticks, and they must both supply the sticks.

(Gemara): In a place where the custom is to harvest and he detached (which involves an even greater effort than harvesting)...

The field owner can say to the sharecropper, "That was your choice!''

In a place where the custom was to detach and the sharecropper harvested...

The field owner can say to the sharecropper, "Leave and take with you the compost that you have left in my field''.

Tosefta: A sharecropper who received a field is required to harvest, bundle, thresh, winnow and select the produce.

One who digs around fields, one who measures fields, one who supervises the borders of fields, city guards and the king's scribe (who records the tax obligations of the city's residents); since their payment is taken from the field, the owner and sharecropper pay half each.

The city digger, the bathhouse superviser and the city barber - when they are invited by the sharecropper, the sharecropper pays; when they are invited by the owner, the owner pays. The custom of the placeis always followed.

(Mishnah): A sharecropper who received a field from his friend and it is a Beis Shelachin (a field that contains a spring as rain water is not sufficient) or a Beis Ha'ilan (field of trees); if the spring dried up or the trees were chopped down, the sharecropper cannot reduce the quantity of produce that he must give them owner (since he did not make a stipulation).

But if he said, "Rent me this Beis Shelachin or this Beis Ha'Ilan'' and the spring dried up or the trees were chopped down, he can reduce the amount that he gives to the owner.

(Gemara) - R. Yitzchak: (He can only reduce) if the entire spring dried up; but if instead of it being two storeys down it became three storeys down, the owner can tell him, "Just work harder and bring it''.

The Mishnah taught: If the trees were chopped down.

R. Yitzchak: (He can only reduce) if all of the trees were chopped down, but if there were still 10 trees in a 'Beis Seah' area, the owner can tell him, "(On the contrary!) Beforehand, the trees could not grow well, as they were too densely planted; now, they can produce better fruit.''