Genesis 28:6

28:6 Esau saw that Isaac had blessed Jacob and sent him off to Paddan Aram to find a wife there. As he blessed him, Isaac commanded him, “You must not marry a Canaanite woman.”

Genesis 28:9

28:9 So Esau went to Ishmael and married Mahalath, the sister of Nebaioth and daughter of Abraham’s son Ishmael, along with the wives he already had.