Leviticus 19:20

King James 3 - The Literal Traslation

And when a man lies with a woman with semen, and she is a slave-girl, betrothed to a man, and not truly redeemed, and freedom not having been given to her, there shall be an inquest; they shall not be put to death, because she was not free.

Cross References

Galatians 4:22

For it is written, Abraham had two sons, one out of the slave woman and one out of the free woman.