Deuteronomy 21:13

New International Version

and put aside the clothes she was wearing when captured. After she has lived in your house and mourned her father and mother for a full month, then you may go to her and be her husband and she shall be your wife.

Cross References

Hosea 3:3

Then I told her, “You are to live with me many days; you must not be a prostitute or be intimate with any man, and I will behave the same way toward you.”