For the source text click/tap here: Bava Batra 66
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The Gemora cites a braisa: If a man sells a house (and he does not specify what is included), he has sold the door, the bolt, and the lock (that are all attached to the house), but not the key (for it is movable). He has sold the mortar that has been hollowed out from something that was attached to the ground, but not one that has been hollowed out from something that was not attached to the ground, and afterwards, it was fixed to the ground. He sold the mill-ring, but not the hopper (for it is movable). He has not sold the oven, the stove or the millstones (for they are movable).
Rabbi Eliezer, however, says that everything attached to the ground (even if it was only fixed to the ground afterwards) is regarded as the ground. When he said to him, “I am selling you the house and all that is in it,” - all of the utensils (mentioned above) are sold. In either case, he has not sold the well, the cistern, or the annex.
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