Leviticus 19:20

Christian Standard Bible Anglicised

‘If a man has sexual intercourse with a woman who is a slave designated for another man, but she has not been redeemed  or given her freedom, there must be punishment.  They are not to be put to death, because she had not been freed.

Cross References

Galatians 4:22

For it is written that Abraham  had two sons, one by a slave  and the other by a free woman.