Genesis 16:4-8

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.

Now the angel of the Lord found her by a spring of water in the wilderness, by the spring on the way to Shur.

He said, “Hagar, Sarai’s slave woman, from where have you come, and where are you going?” And she said, “I am fleeing from the presence of my mistress Sarai.”