Reference for Ketubot 179:13
איכא דאמרי מדלא קתני אם קדמה שניה ותפסה אין מוציאין מידה מכלל דאי קדמה שניה ותפסה מפקינן מינה
There are those who say: Since it was not taught, “If the second wife went forth [before the first] and seized [her ketubah] they do not take it away from her,” it could be deduced that if she goes forth and seizes payment it may be taken away from her.
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