And if you are not pleased with her, you are to let her go wherever she wishes. But you must not sell her for money or treat her as a slave, since you have dishonored her.
14. And it shall be, if thou have no delight in her. I have been compelled to separate this sentence from the foregoing context which I have explained elsewhere; Vide vol. 2, p. 70. for Moses there gave instructions how a captive woman was to be taken to wife if her beauty attracted a Jewish husband.
By this law a soldier is allowed to marry his captive if he pleased. For the hardness of their hearts Moses gave them this permission, lest, if they had not had liberty given them to marry such, they should have taken liberty to defile themselves with them, and by such wickedness the camp would have been troubled.
Commenting on Deuteronomy 21:10-14
And it shall be, if thou have no delight in her;.... Either some time after marriage: then thou shalt let her go whither she will; by a bill of divorce, as the Targum of Jonathan, who understands it in this sense, and as the connection of the words seems to require; or else before marriage, at the month's end, or any time before, that if...