Genesis 16:4-6

4He slept with Hagar, and she conceived. When she knew she was pregnant, she began to despise her mistress.

5Then Sarai said to Abram, “You are responsible for the wrong I am suffering. I put my slave in your arms, and now that she knows she is pregnant, she despises me. May the Lord judge between you and me.”

6“Your slave is in your hands,” Abram said. “Do with her whatever you think best.” Then Sarai mistreated Hagar; so she fled from her.