What if a woman needs to take an oath to receive her ketubah? What if the husband stipulates that she'll never need to take an oath? And what do you do if you need to collect the debt from a case where no oath is possible? Especially if orphans are involved. Plus, when a woman gets a partial payment, for example, who is then responsible for proving either she is still owed more or that she is not? Also, what happens if the woman accepted a partial payment of her ketubah, and she did so before witnesses? Cam we assume that all of it was paid, whether before witnesses or not? Are they trying to swindle each other or is the disagreement sincere? Plus, a comparison to oath-taking in the context of debtors and creditors, in civil matters. Plus another comparison to transactional cases that don't need witnesses.