הַשָּׂדֶ֛ה אֲשֶׁר־קָנָ֥ה אַבְרָהָ֖ם מֵאֵ֣ת בְּנֵי־חֵ֑ת שָׁ֛מָּה קֻבַּ֥ר אַבְרָהָ֖ם וְשָׂרָ֥ה אִשְׁתּֽוֹ׃
ang bukid na binili ni Abraham mula sa mga anak ni Het; doon inilibing si Abraham at si Sara na kanyang asawa.
Radak
השדה, every time the burial in this cave is mentioned in the Torah the fact that Avraham had purchased the cave and the field is mentioned also. It is to pay tribute to the love for G’d by Avraham, who in spite of G’d’s promises of owning the entire land, had been unable to bury even his own wife in that land until had had purchased a burial plot for her. Avraham never for a moment queried G’d about this problem he had been forced to cope with.
Rav Hirsch
Der Erwerbstitel wird immer und immer wiederholt, weil in diesem Kauf ja, menschlich gesprochen, den Kindern die einzige Bürgschaft gegeben war, daß ihre Väter in diesem Lande ihr Land erkannten, und sich deshalb ihre bleibende Ruhestätte dort genommen hatten.