Leviticus 19:20

And if a man lie with a woman for copulation, and she is a bondwoman betrothed to a husband, but not at all ransomed, nor hath freedom been given to her, there shall be a chastisement: they shall not be put to death, for she was not free.

Deuteronomy 22:23-24

If a damsel, a virgin, be betrothed to some one, and a man find her in the city, and lie with her,

Exodus 21:20-21

And if a man strike his bondman or his handmaid with a staff, and he die under his hand, he shall certainly be avenged.

Treasury of Scripture Knowledge

Summary

And whosoever lieth carnally with a woman, that is a bondmaid, betrothed to an husband, and not at all redeemed, nor freedom given her; she shall be scourged; they shall not be put to death, because she was not free.

Betrothed to an husband

Bible References

Betrothed to an husband

Exodus 21:20
And if a man strike his bondman or his handmaid with a staff, and he die under his hand, he shall certainly be avenged.
Deuteronomy 22:23
If a damsel, a virgin, be betrothed to some one, and a man find her in the city, and lie with her,