Related על כתובות 174:17

One who reduces her ketubah, she can collect [it] without an oath [that she hasn't already collected it]. How so? Her ketubah was 1000 zuz. He said to her: "You received your ketubah", and she says, "I didn't receive it but it was only 100 zuz"—she can collect without an oath. [She can't collect her ketubah from] mortgaged property [without an oath]—one doesn't even need to say this for after her husband's death, but even during her husbands life. [She can't collect her ketubah from] property of orphans—one doesn't need to say this for adults, but even from minors.