Parallel
Genesis 23:20
Swete's Septuagint · Berean Standard Bible
καὶ ἐκυρώθη ὁ ἀγρὸς καὶ τὸ σπήλαιον ὃ ἦν αὐτῷ τῷ Ἀβραὰμ εἰς κτῆσιν τάφου πα ἁ τῶν υἱῶν Χέτ.
So the field and its cave were deeded by the Hittites to Abraham as a burial site.