Related על כתובות 11:2

A widow who claims her ketubah, but the inheritors [of her husband] say to her: "You received your ketubah [already]!"—until she is [re]married, they need to bring evidence that she received her ketubah; once she is [re]married, she needs to bring evidence that she did not receive her ketubah. If she sold her ketubah, used her ketubah as a pledge [for a loan that goes to the creditor in the meantime], used her ketubah as a security [on a loan but that remains with her]—she loses her financial support. Rabbi Shimon says: Even if she sold some [of her ketubah], even if she made some of it as a pledge or some of it as a deposit—she loses her financial support. One doesn't need to say [that this applies] after her husband's death, but even during her husband's lifetime [if she did these things to her ketubah, she would lose her right to financial support after his death]. But [her losing her financial support only applies if] she writes [in the contract dealing with her ketubah] "These I sold for my ketubah, these I sold for my financial support"—words of Rabbi Yehudah. Rabbi Yoseh says: [It applies only] if she sold and wrote without specification; that's why her legal power is stronger [that most of the time the inheritors have to bring the evidence].