Ketubot 90A

אם גט קודם לכתובה ⁠— גובה שתי כתובות. כתובה קודמת לגט ⁠— אינה גובה אלא כתובה אחת, שהמגרש את אשתו והחזירה ⁠— על מנת כתובה הראשונה החזירה.

if the date of the bill of divorce precedes the date of the marriage contract, she collects payment for her two marriage contracts. She is entitled to the first marriage contract by virtue of the bill of divorce. She is entitled to the second one because she has shown that it was written for her when they remarried. If the date of the marriage contract precedes the date of the bill of divorce, she collects payment of only one marriage contract. This is because it is presumed that one who divorces his wife and remarries her, remarries her with the intention of using her first marriage contract, unless there is a reason to say otherwise.

מתני׳ קטן שהשיאו אביו ⁠— כתובתה קיימת, שעל מנת כן קיימה. גר שנתגיירה אשתו עמו ⁠— כתובתה קיימת, שעל מנת כן קיימה.

Mishnah: In the case of a minor who was married off by his father, the wife’s marriage contract that the minor wrote is valid even after the husband comes of age. He cannot excuse himself by saying that it was drafted when he was a minor, as it is on this condition, the terms of this marriage contract, that he maintained her as his wife upon his maturity. Similarly, in the case of a convert whose wife converted with him, the marriage contract that she had as a non-Jew is valid, for on this condition he maintained her as his wife.

גמ׳ אמר רב הונא: לא שנו אלא מנה מאתים, אבל תוספת ⁠— אין לה. ורב יהודה אמר: אפילו תוספת יש לה.

Talmud: Rav Huna said: They taught that the wife of a minor or convert receives payment only with regard to the main sum of 100 dinars or 200 dinars. However, she does not have the right to receive the additional sum that he wrote in her marriage contract, because this document is not legally binding, as it was written by a minor. She receives the main sum only as a result of an ordinance instituted by the rabbis. And Rav Yehuda said: She has even the additional sum.