Mishnayos Bava Basra Perek 4 Mishnah 4

One who sells a courtyard without specifying what is included in the sale has sold with it the houses, pits, ditches, and caves found in the courtyard, but he has not sold the movable property. When the seller says to the buyer: I am selling you it and everything that is in it, all these components are sold along with the courtyard, even the movable property. Both in this case, where he executes the sale without specification, and in that case, where he adds the phrase that includes the movable property, he has not sold the bathhouse, nor has he sold the olive press that is in the courtyard, as each is an entity with a discrete purpose and not an integral part of the courtyard. Rabbi Eliezer says: One who sells a courtyard without specifying what is included in the sale has sold only the airspace, i.e., the open space, of the courtyard, but nothing found in the courtyard, not even the houses.

הַמּוֹכֵר אֶת הֶחָצֵר, מָכַר בָּתִּים, בּוֹרוֹת, שִׁיחִין, וּמְעָרוֹת, אֲבָל לֹא אֶת הַמִּטַּלְטְלִין. בִּזְמַן שֶׁאָמַר לוֹ, הִיא וְכָל מַה שֶּׁבְּתוֹכָהּ, הֲרֵי כֻלָּן מְכוּרִין. בֵּין כָּךְ וּבֵין כָּךְ, לֹא מָכַר אֶת הַמֶּרְחָץ, וְלֹא אֶת בֵּית הַבַּד שֶׁבְּתוֹכָהּ. רַבִּי אֱלִיעֶזֶר אוֹמֵר, הַמּוֹכֵר אֶת הֶחָצֵר, לֹא מָכַר אֶלָּא אֲוִירָהּ שֶׁל חָצֵר: