Genesis 16:3-6

It was after he had lived ten years in Canaan that Sarai gave Hagar to her husband Abram. (Hagar was her slave girl from Egypt.) Abram had sexual relations with Hagar, and she became pregnant. When Hagar learned she was pregnant, she began to treat her mistress Sarai badly. Then Sarai said to Abram, “This is your fault. I gave my slave girl to you, and when she became pregnant, she began to treat me badly. Let the LORD decide who is right—you or me.” But Abram said to Sarai, “You are Hagar’s mistress. Do anything you want to her.” Then Sarai was hard on Hagar, and Hagar ran away.