Genesis 25:8-10

EasyEnglish Bible

⁸ He died after a good and long life, when he was very old. He joined his ancestors who had died before him. ⁹ His sons, Isaac and Ishmael, buried his body in the cave of Machpelah. That was near Mamre. The cave is in the field that belonged to Zohar's son, Ephron. He was a Hittite. ¹⁰ Abraham had bought the field from the Hittites.

So they buried Abraham there. It was in the cave where his wife, Sarah, had also been buried.