Gen 16:2-5

2and Sarai said to Abram, “You see that the Lord has prevented me from bearing children; go in to my slave-girl; it may be that I shall obtain children by her.” And Abram listened to the voice of Sarai.3So, after Abram had lived ten years in the land of Canaan, Sarai, Abram's wife, took Hagar the Egyptian, her slave-girl, and gave her to her husband Abram as a wife.4He went in to Hagar, and she conceived; and when she saw that she had conceived, she looked with contempt on her mistress.5Then Sarai said to Abram, “May the wrong done to me be on you! I gave my slave-girl to your embrace, and when she saw that she had conceived, she looked on me with contempt. May the Lord judge between you and me!”