ציטירנדיקער פּירוש אויף מלאכי 2:14

אם רעה בעיני אדוניה, and as a result he does not want to keep the implied agreement to marry her, she will not leave his employ in the manner her male counterparts would leave, but, seeing that he committed a breach of trust by not finalising the deal and marrying her (violating what the prophet Maleachi 2,14 called “the Lord is a witness between you and the wife of your youth with whom you have broken faith, although she is your partner and covenanted spouse,”) והפדה, the master has to assist her by releasing her prematurely, by allowing her to compensate the employer for unexpired years of service.

IN HIS BREAKING FAITH WITH HER - Since he is breaking faith with her in that he does not designate her, as it is written in Malachi (2:14) regarding the wife of one's youth, "you have broken faith with her, though she is your partner and covenanted spouse."

בבגדו בה, “seeing he has betrayed her.” He would have betrayed her if he sold her to a Gentile master. He can only sell her to someone who can wed her in accordance with Jewish law.
There is a disagreement between the two scholars Rabbi Eliezer and Rabbi Akiva (Kidushin 18) on the precise meaning here of the words בבגדו בה, “seeing he has betrayed her.” One of the scholars traces the word בבגדו to the word בגד, “garment,” whereas the other scholar understands is as בגידה, “betrayal.” Rabbi Akiva who holds that it is connected to בגד bases himself on the principle of יש אם למקרא that the reading of the text is more authoritative when it conflicts with the spelling. The reading is based on the word לו as we read the word לא as if it had been spelled with a ו, meaning the master had designated her for himself. By becoming betrothed to her master at the time she entered his service he had placed her under the protection of his mantle, figuratively speaking. Once her master had done this he is no longer free to sell her. Rabbi Eliezer, on the other and, believes that the spelling is of greater weight whenever there is an ambiguity in the meaning of the words, a principle known as יש אם למסורת. In our case the spelling of the word לא is with the letter א meaning “no” i.e. he had not betrothed her to himself. Rabbi Akiva sees an ambiguity even in the word בבגדו-בה itself, being convinced it means “when his garment was on her,” seeing that if it were derived from בגידה, betrayal, the vowel under the second letter ב should have been a chataf kametz instead of a chirik which is proof that it is derived from בגד, a word in which the basic vowel segol always turns into a chirik when it appears in the possessive form. The word בה is to be understood as עליה, “upon her.” The word בה also means עליה in Nechemyah 2,12 הבהמה אשר אני רוכב בה, “the beast which I ride on.” Rabbi Eliezer understands the word as derived from בגידה even though the vowel pattern does not appear to support his theory. The reason is that he considers the word not as a possessive form but as an infinitive. The vowel chirik as such would be perfectly in place. A Biblical example supporting his theory would be Leviticus 26,26 בשברי לכם מטה לחם, “when I break for you the staff of bread.” The reason the Torah writes בה, (according to Rabbi Eliezer) is that the preposition used with the word בגד, betray, is always the letter ב. To quote but two examples: (Malachi 2,14 and Malachi 2,15) אשת נעוריך אשר בגדת בה, “the wife of your youth whom you have betrayed; or ובאשת נעוריך אל יבגוד, “and let no one break faith with the wife of your youth.” On that same folio of the Talmud Rabbi Shimon holds that we pay halachic attention to both the spelling and the reading so that we can derive two rulings from the verse.