Genesis 16:2-6

So Sarai said to Abram, “See now, the Lord has prevented me from bearing children. Please have relations with my slave woman; perhaps I will obtain children through her.” And Abram listened to the voice of Sarai.

And so after Abram had lived ten years in the land of Canaan, Abram’s wife Sarai took Hagar the Egyptian, her slave woman, and gave her to her husband Abram as his wife.

Then he had relations with Hagar, and she conceived; and when Hagar became aware that she had conceived, her mistress was insignificant in her sight.

So Sarai said to Abram, “May the wrong done to me be upon you! I put my slave woman into your arms, but when she saw that she had conceived, I was insignificant in her sight. May the Lord judge between you and me.”

But Abram said to Sarai, “Look, your slave woman is in your power; do to her what is good in your sight.” So Sarai treated her harshly, and she fled from her presence.