Genesis 17:26

17:26 Abraham and his son Ishmael were circumcised on the very same day.

Genesis 17:25

17:25 his son Ishmael was thirteen years old when he was circumcised.

Genesis 25:9

25:9 His sons Isaac and Ishmael buried him in the cave of Machpelah near Mamre, in the field of Ephron the son of Zohar, the Hethite.