Genesis 16:3-5

So Sarai, Abram’s wife, took her Egyptian maid Hagar and gave her to her husband Abram as a wife. Abram had been living ten years in Canaan when this took place. He slept with Hagar and she got pregnant. When Hagar learned she was pregnant, she looked down on her mistress. Sarai told Abram, “It’s all your fault that I’m suffering this abuse. I put my maid in bed with you and the minute she knows she’s pregnant, she treats me like I’m nothing. May GOD decide which of us is right.”