כִּי֩ בָג֨וֹד בָּגְד֜וּ בִּ֗י בֵּ֧ית יִשְׂרָאֵ֛ל וּבֵ֥ית יְהוּדָ֖ה נְאֻם־יְהוָֽה׃
For the house of Israel and the house of Judah Have dealt very treacherously against Me, Saith the LORD.
Mekhilta d'Rabbi Yishmael
"After he (the father) has been faithless ("bagdah") to her" (by selling her,) by degrading her and not treating her as a Jewish daughter, he, too, is not permitted to retain her (i.e., to sell her a second time). These are the words of R. Yonathan b. Avtalmos. "bagdah" here connotes deceit" as in (Malachi 2:11) "bagdah Yehudah" and (Jeremiah 5:11) "for the house of Israel bagod bagdu against Me." R. Yishmael says: Scripture is speaking of the master, who took her to marry her and did not do so. He, too, may not retain her (to sell her to another as a maid-servant). R. Akiva says: "bevigdo bah": after "he has spread his garment ('beged') over her" (to take her as a wife and did not do so).