אבן העזר צ״חEven HaEzer 98

Se’if 1א׳

אִם פְּטָרָהּ הַבַּעַל מִשְּׁבוּעָה, גּוֹבָה כְּתֻבָּתָהּ בְּלֹא שְׁבוּעָה. וּכְפִי לְשׁוֹן הַפִּטּוּר הִיא נִפְטֶרֶת. כֵּיצַד, כָּתַב: נֶדֶר וּשְׁבוּעָה אֵין לִי עָלַיִךְ, אֵינוֹ יָכוֹל לְהַשְׁבִּיעָהּ שׁוּם שְׁבוּעָה; אֲבָל מַשְׁבִּיעַ אֶת יוֹרְשֶׁיהָ, אִם גֵּרְשָׁהּ וּמֵתָה יוֹרְשֶׁיהָ נִשְׁבָּעִים שְׁבוּעַת הַיּוֹרְשִׁים; וְאֶת הַבָּאִים בִּרְשׁוּתָהּ, כְּגוֹן אִם מָכְרָה כְּתֻבָּתָהּ לַאֲחֵרִים וְנִתְגָּרְשָׁה וּמֵתָה, וְהַלָּקוֹחוֹת תּוֹבְעִים כְּתֻבָּתָהּ, נִשְׁבָּעִים: שֶׁלֹּא פְּקָדַתְנוּ. וְאִם הִיא עֲדַיִן קַיֶּמֶת, לֹא יִגְבּוּ הַלָּקוֹחוֹת אֶלָּא אִם כֵּן תִּשָּׁבַע הִיא שֶׁלֹּא נִפְרְעָה. הַגָּה: וְעַיֵּן לְקַמָּן סִימָן ק"ה. פָּטַר אִשְׁתּוֹ בִּשְׁעַת מִיתָתוֹ מִן הַשְּׁבוּעָה, נוֹטֶלֶת כְּתֻבָּתָהּ בְּלֹא שְׁבוּעָה. אֲבָל אִם רָאוּ אוֹתָהּ אַחַר כָּךְ מַּפְסֶדֶּת הַנְּכָסִים, צְרִיכָה לִשָּׁבַע (מָרְדְּכַי סוֹף הַכּוֹתֵב). וְאִם יֵשׁ עֵדִים שֶׁהִפְסִידָה אוֹ נָתְנָה לַאֲחֵרִים, אוֹ שֶׁהִיא מוֹדָה, צְרִיכָה לְשַׁלֵּם וְאֵינָהּ נֶאֱמֶנֶת לוֹמַר שֶׁבַּעֲלָהּ צִוָּה לָהּ כָּךְ (תְּשׁוּבַת הָרֹא"שׁ כְּלָל נ'). אֲבָל אִם עֲשָׂאָהּ נֶאֱמָן בְּפֵרוּשׁ עַל כָּל דָּבָר כִּשְׁנֵי עֵדִים, נֶאֱמֶנֶת (סְבָרַת הָרַב):

If the husband exempted her from taking an oath [to collect her Ketubah] she may collect without an oath. The nature of the exemption is dependent on the language he used when exempting her. For example, if he wrote, "I have no vow or oath against you," he cannot force her take any oath, but he can force her heirs - if he divorced her and she died, the heirs must take the 'vow of heirs'. [Also] anyone who comes with her permission, such as a case in which she sold her Ketubah to others and she was divorced and subsequently died, and the purchasers claim the Ketubah, they must swear, for his command did not apply to them. If she is still alive the purchasers cannot collect unless she swears that she was not repaid. Rem"a: See (Shulchan Arukh, Even HaEzer 105). If he exempted his wife from swearing when he died, she may collect her Ketubah without swearing. But if [the members of the court] see after this that she is destroying the property, she must swear. If there are witnesses that attest that she destroyed [the property] or gave it away, or if she admits to having done so, she must repay [the estate] and she is not believed to say that her husband ordered her to do so. If [her husband] gave her the power to be believed as two witnesses, she is trusted.

Se’if 2ב׳

וּמַשְׁבִּיעִין גַּם כֵּן יוֹרְשֶׁיהָ וְהַבָּאִים בִּרְשׁוּתָהּ אִם פָּגְמוּ הַכְּתֻבָּה אוֹ אִם נַעֲשׂוּ אַפּוֹטְרוֹפּוֹס, וַאֲפִלּוּ אִם נָתַן לָהּ רְשׁוּת לְמַנּוֹת אַפּוֹטְרוֹפּוֹס:

We also require her heirs to take an oath, and anyone else who comes in her stead, if there is some defect in the Ketubah ot if there is a custodian. This is true even if [her husband] gave her authority to appoint a custodian.

Se’if 3ג׳

כָּתַב לָהּ: "נֶדֶר וּשְׁבוּעָה אֵין לִי עָלַיִךְ וְעַל יוֹרְשַׁיִךְ וְעַל הַבָּאִים בִּרְשׁוּתֵךְ", אֵינוֹ יָכוֹל לְהַשְׁבִּיעַה לֹא אוֹתָהּ וְלֹא יוֹרְשֶׁיהָ וְלֹא אֶת הַבָּאִים בִּרְשׁוּתָהּ שׁוּם שְׁבוּעָה. אֲבָל יוֹרְשָׁיו וְהַבָּאִים בִּרְשׁוּתוֹ, כְּגוֹן לָקוֹחוֹת שֶׁקָּנוּ מִמֶּנּוּ, מַשְׁבִּיעִים אוֹתָהּ וְאֶת יוֹרְשֶׁיהָ וְאֶת הַבָּאִים בִּרְשׁוּתָהּ, כְּגוֹן אִם נִתְגָּרְשָׁה וּמֵתָה; אֲבָל אִם נִתְאַלְמְנָה וּמֵתָה קֹדֶם שֶׁנִּשְׁבְּעָה, אֵין יוֹרְשֶׁיהָ וְלֹא הַבָּאִים בִּרְשׁוּתָהּ גּוֹבִין כְּתֻבָּתָהּ:

If he wrote, "I have no vow or oath against you or your inheritors or all those who come with your permission," he may not force any oath on her or her inheritors or those who come with her permission. But his inheritors and those who come with his permission, such as buyers who acquired it from him, they can force an oath on her and her inheritors and those who come with her permission, such as if she were divorced or died. But if she was widowed and died before taking the oath, neither her inheritors nor those who come with her permission may collect her Ketubah.