וְהָיָ֞ה אִם־לֹ֧א חָפַ֣צְתָּ בָּ֗הּ וְשִׁלַּחְתָּהּ֙ לְנַפְשָׁ֔הּ וּמָכֹ֥ר לֹא־תִמְכְּרֶ֖נָּה בַּכָּ֑סֶף לֹא־תִתְעַמֵּ֣ר בָּ֔הּ תַּ֖חַת אֲשֶׁ֥ר עִנִּיתָֽהּ׃ (ס)
И если ты не получишь от нее удовольствия, то отпустишь ее, куда она пожелает; но ты не будешь продавать ее вообще за деньги, ты не будешь иметь дело с ней как с рабом, потому что ты смирил ее.
Mishneh Torah, Kings and Wars
In all, she must wait three months: one month of wailing, and two months thereafter. He then may marry her with a Kesuba (marriage contract) and Kiddushin (sanctification). If he does not want her, he releases her on her own. If he sells her76As a maidservant., he violates the Negative Commandment “and you may not sell her for money, you shall not deal with her as a slave, because you have humbled her” (Deut. 21:14). The sale is invalid and he must return the money. If he first had relations with her and then seized her for the purposes of making her a maidservant, once he uses her as such, he violates a Negative Precept, as it says, “you shall not deal with her as a slave” (Deut. 21:14), that is, he must not have her serve him.
Mishneh Torah, Negative Mitzvot
Not to sell a beautiful woman, (taken captive in war), as it is said, “…thou shalt not sell her for money (Deut. 21:14).
Mishneh Torah, Negative Mitzvot
Not to degrade a beautiful woman (taken captive in war) to the condition of a bondwoman, as it is said, “Thou shalt not make merchandise**According to Sifré, quoted by Maimonides in the Sefer-Ha-Mitzvoth, “make menial use of her”. of her” (ibid. 21:14).