1. Leviticus 19:20 (ESV)
  2. Exposition

What does it mean for the girl to be assigned to another man but not yet ransomed?

Leviticus 19:20 (ESV)

20 “If a man lies sexually with a woman who is a slave, assigned to another man and not yet ransomed or given her freedom, a distinction shall be made. They shall not be put to death, because she was not free;

The woman is not considered betrothed at this point because no exchange has been made. She is still a slave.