Genesis 28:6 - 28:9
6 And Esau saw that Isaac had blessed Jacob and sent him away to Paddan-aram to take for himself a wife from there, and that when he blessed him he commanded him, saying, “You shall not take a wife from the daughters of Canaan,” 7 and that Jacob had listened to his father and his mother and had gone to Paddan-aram. 8 So Esau saw that the daughters of Canaan were displeasing in the sight of his father Isaac; 9 and Esau went to Ishmael and took Mahalath, the daughter of Ishmael, Abraham’s son, the sister of Nebaioth, to be his wife, besides the wives that he had.