It was asked from Hasan (may Allah have mercy on him) that if a man's wife was taken captive and then her husband paid ransom to free her from the enemy, would she be considered his slave-girl? He replied: No.

Hazrat Ibn Jurayj (may Allah have mercy on him) narrates that I asked Hazrat Ata (may Allah have mercy on him) if some free women are captured by the enemy and then someone buys them from them, can he have intercourse with them? He replied: No, and they will not become slave-girls either. Rather, the amount of money for which they were bought will be recovered from them, and no more than that amount will be taken.