Kiddushin 26A

אי נמי: בחבילי זמורות.

Alternatively, the buyer can lift an elephant by using bundles of vines. He leads the elephant to them, and when the elephant stands on the bundles of vines this is considered lifting the elephant.

מתני׳ נכסים שיש להם אחריות ⁠– נקנין בכסף ובשטר ובחזקה. שאין להם אחריות ⁠– אין נקנין אלא במשיכה. נכסים שאין להם אחריות נקנין עם נכסים שיש להם אחריות בכסף ובשטר ובחזקה,

Mishnah: Property that serves as a guarantee, i.e., land or other items that are fixed in the earth, can be acquired by means of giving money, by means of giving a document, or by means of taking possession of it. Property that does not serve as a guarantee, i.e., movable property, can be acquired only by pulling. Property that does not serve as a guarantee can be acquired along with property that serves as a guarantee by means of giving money, by means of giving a document, or by means of taking possession of them. The movable property is transferred to the buyer’s possession when it is purchased together with the land, by means of an act of acquisition performed on the land.

וזוקקין את הנכסים שיש להם אחריות לישבע עליהן.

Generally, one is not obligated to take an oath concerning the denial of a claim with regard to land. The Mishnah continues: And in a legal dispute involving both land and movable property, if the defendant makes a partial admission of the claim with regard to the movable property, thereby rendering himself obligated to take an oath denying any responsibility for the remaining property, the movable property binds the property that serves as a guarantee, i.e., the land, so that he is forced to take an oath concerning the land as well, despite the fact that one is generally not obligated to take an oath for a claim involving land.