Kesubos 2:3-2:6
Kesuvos2: 3
הָעֵדִים שֶׁאָמְרוּ: ,,כְּתַב יָדֵינוּ הוּא זֶה, אֲבָל אֲנוּסִים הָיִינוּ”, ,,קְטַנִּים הָיִינוּ”, ,,פְּסוּלֵי עֵדוּת הָיִינוּ” — הֲרֵי אֵלּוּ נֶאֱמָנִים. וְאִם יֵשׁ עֵדִים שֶׁהוּא כְתַב יָדָם, אוֹ שֶׁהָיָה כְתַב יָדָם יוֹצֵא מִמָּקוֹם אַחֵר — אֵינָן נֶאֱמָנִין.
[If] witnesses said: “This is our handwriting, but we were coerced,” [or] “we were minors,” [or] “we were unfit for testimony,” these are believed. If, however, there are witnesses that it is their handwriting, or if their handwriting is verified from another source, they are not believed.
Kesuvos2: 4
זֶה אוֹמֵר: ,,זֶה כְּתַב יָדִי, וְזֶה כְּתַב יָדוֹ שֶׁל חֲבֵרִי”, וְזֶה אוֹמֵר: ,,זֶה כְּתַב יָדִי, וְזֶה כְּתַב יָדוֹ שֶׁל חֲבֵרִי” — הֲרֵי אֵלּוּ נֶאֱמָנִין. זֶה אוֹמֵר: ,,זֶה כְּתַב יָדִי”, וְזֶה אוֹמֵר: ,,זֶה כְּתַב יָדִי» — צְרִיכִים לְצָרֵף עִמָּהֶם אַחֵר; דִּבְרֵי רַבִּי. וַחֲכָמִים אוֹמְרִים: אֵינָן צְרִיכִין לְצָרֵף עִמָּהֶם אַחֵר; אֶלָּא נֶאֱמָן אָדָם לוֹמַר: ,,זֶה כְּתַב יָדִי”.
[If] this one says: “This is my handwriting, and this is the other’s handwriting,” and this one says: “This is my handwriting, and this is the other’s handwriting,” these are believed. [If] this one says: “This is my handwriting,” and this one says: “This is my handwriting,” they must join to themselves another person; [these are] the words of Rabbi. The Sages, however, say: They need not join another person to themselves; rather, a person is believed to say: “This is my handwriting.”
Kesuvos2: 5
הָאִשָּׁה שֶׁאָמְרָה: ,,אֵשֶׁת אִישׁ הָיִיתִי, וּגְרוּשָׁה אֲנִי” — נֶאֱמֶנֶת, שֶׁהַפֶּה שֶׁאָסַר הוּא הַפֶּה שֶׁהִתִּיר. וְאִם יֵשׁ עֵדִים שֶׁהָיְתָה אֵשֶׁת אִישׁ, וְהִיא אוֹמֶרֶת: ,,גְּרוּשָׁה אֲנִי” — אֵינָהּ נֶאֱמֶנֶת.  אָמְרָה: ,,נִשְׁבֵּיתִי, וּטְהוֹרָה אֲנִי” — נֶאֱמֶנֶת, שֶׁהַפֶּה שֶׁאָסַר הוּא הַפֶּה שֶׁהִתִּיר. וְאִם יֵשׁ עֵדִים שֶׁנִּשְׁבֵּית, וְהִיא אוֹמֶרֶת: ,,טְהוֹרָה אֲנִי” — אֵינָהּ נֶאֱמֶנֶת. וְאִם מִשֶּׁנִּשֵּׂאת בָּאוּ עֵדִים — הֲרֵי זוֹ לֹא תֵצֵא.
[If] a woman said: “I was married, but I am divorced,” she is believed, for the one that created the liability is the one that undid it. If, however, there are witnesses that she was married, and she says: “I am divorced,” she is not believed.  [If] she said: “I was captured, but I am undefiled,” she is believed, for the one that created the liability is the one that undid it. If there are wit-nesses that she was captured, however, and she says: “I am undefiled,” she is not believed. But, if after she married, witnesses came, she need not leave.
Kesuvos2: 6
שְׁתֵּי נָשִׁים שֶׁנִּשְׁבּוּ, זֹאת אוֹמֶרֶת: ,,נִשְׁבֵּיתִי, וּטְהוֹרָה אֲנִי”, וְזֹאת אוֹמֶרֶת: ,,נִשְׁבֵּיתִי, וּטְהוֹרָה אֲנִי” — אֵינָן נֶאֱמָנוֹת. וּבִזְמַן שֶׁהֵן מְעִידוֹת זוֹ אֶת זוֹ — הֲרֵי אֵלּוּ נֶאֱמָנוֹת.
[If] two women were captured, [and now] this one says: “I was captured, but I am undefiled,” and this one says: “I was captured, but I am undefiled,” they are not believed. [If] they testify for one another, however, these are believed.