Bava Batra

— It was necessary to state the rule to show that [this is the case] even if the seller drew the boundaries [in the deed of sale] outside [the inner room]. This is based on the ruling laid down by R. Nahman in the name of Rabbah b. Abbuha. For R. Nahman said in the name of Rabbah b. Abbuha that if a man sells another an apartment  in a large tenement-house, even if he draws the boundaries outside [the whole tenement-house] we say that he only drew the boundaries wide.  How are we to understand this rule? If the apartment is called an apartment and the tenement a tenement, then it is self-evident:  he is selling him an apartment, not a tenement? If again the tenement also is called an apartment, then he sells the whole to him [does he not]? — The rule is required for the case where most people call the apartment an apartment and the tenement a tenement, but some call the tenement also an apartment. I might think that in this case [if he draws the boundaries wide] he sells him the whole. We are therefore told that since he might have inserted [in the deed of sale the words], 'And I have not reserved for myself anything from this transfer,'  and did not insert them, we assume that he did reserve something. R. Nahman also said in the name of Rabbah b. Abbuha: If a man sells to another a field in a big stretch of fields, even though he draw the outer boundaries [right round the whole stretch, he only sells the field, because] we say that he draws the boundaries wide. How are we to understand this? If the field is called a field and the stretch a stretch, the proposition is self-evident; he is selling him a field, not a stretch. If again the stretch is also called field, then the whole is sold to him [is it not]? — The rule is necessary for the case where some call the stretch a stretch and some call it a field. You might think that in this case he sells him the whole. Therefore we are told that since he might have inserted [in the deed of sale the words]. 'I have not reserved for myself anything from this transfer,' and did not insert them, we are to assume that he did reserve something.  And both these rulings [about the house and the field] required to be stated. For if had only the one about the house, I might say that the reason [why the tenement is not sold with the apartment] is because they are used for different purposes,  but in the case of the stretch of fields and the field where the whole [stretch] is used for the same purpose I might say that the whole is sold. And if I had only the rule about the stretch of fields, I might think that the reason [why it is not all sold] is because it is difficult to mark off one field [in the middle of a stretch], but in the case of the apartment, where he could easily have marked it off and did not do so, I might think that he has sold him the whole. Hence both are necessary. What authority does R. Mari the son of the daughter of Samuel b. Shilath  follow in the statement he made in the name of Abaye: If a man sells property to another, he should insert in the deed of sale the words, 'I have not reserved from this transfer for myself anything.' The authority is the dictum enunciated by R. Nahman in the name of Rabbah b. Abbuha. A certain man said to another: I will sell you the land of Hiyya's. There were two pieces of land which were called Hiyya's. R. Ashi said: He sold him one piece of land, not two.  If, however, a man says to another, 'I will sell you some lands,'  the minimum that can be called 'lands' is two. If he says 'all the lands', [this includes] all his landed property except gardens and orchards. If he says 'fields',  this includes gardens and orchards also, but not houses and slaves.