If there is a virgin pledged in marriage to a man, and another man encounters her in the city and sleeps with her,
23. If a damsel that is a virgin be betrothed. The severity of the punishment is now extended further, and a betrothed woman is counted as a wife; and this for a very good reason, because she has plighted her troth, and it is a token of abandoned incontinency for the mind of a woman to be so alienated from the man to whom she...
These laws relate to the seventh commandment, laying a restraint by laying a penalty upon those fleshly lusts which war against the soul. I. If a man, lusting after another woman, to get rid of his wife slander her and falsely accuse her, as not having the virginity she pretended to when he married her, upon the disproof of his slander he must be punished, Deu 22:13-19.
Commenting on Deuteronomy 22:13-30
Then ye shall bring them both out unto the gate of the city,.... Where the fact was committed; the Targum of Jonathan is,"to the gate of the court of judicature, which is in that city:" and ye shall stone them with stones, that they die; a man that lay with a married woman, he and she were to be strangled; but this sort of adulterers...