אבן העזר קנ״חEven HaEzer 158

Se’if 1א׳

כְּשֵׁם שֶׁהָאִשָּׁה נֶאֱמֶנֶת לוֹמַר: מֵת בַּעְלִי, שֶׁתִּנָּשֵׂא; כָּךְ נֶאֱמֶנֶת לוֹמַר: מֵת בַּעְלִי, שֶׁתִּתְיַבֵּם, וְהַיָּבָם נִכְנָס לַנַּחֲלָה עַל פִּיהָ. אֲבָל אֵינָהּ נֶאֱמֶנֶת לוֹמַר: מֵת יְבָמִי, שֶׁתִּנָּשֵׂא לַשּׁוּק. וְאֵין הָאִישׁ נֶאֱמָן לוֹמַר: מֵת אָחִי וַאֲיַבֵּם אֶת אִשְׁתּוֹ. לְפִיכָךְ, הָלְכָה הִיא וּבַעְלָהּ וִיבָמָהּ לִמְדִינַת הַיָּם, וּבָאָה וְאָמְרָה: מֵת בַּעְלִי וְאַחַר כָּךְ מֵת יְבָמִי, אוֹ מֵת יְבָמִי וְאַחַר כָּךְ מֵת בַּעְלִי, אֵינָהּ נֶאֱמֶנֶת:

Similar to that a woman is believed to say: "my husband died", [in order] that she may marry, so she is believed to say: "my husband died", [in order that] she may be married in a levirate marriage, and the yovom (brother who enters into a levirate marriage) enters into the inheritance on her word. But she is not believed to say: "my yovom died" [in order] that she marry to the market. And the man is not believed to say: "my brother died and I will enter into levirate marriage with his wife". Therefore, if she went with her husband and her yovom to a country of the sea, and she came and said: "my husband died and then my yovom died", or, "my yovom died and then my husband died", she is not believed.

Se’if 2ב׳

הָלְכָה הִיא וּבַעְלָהּ לִמְדִינַת הַיָּם לְבַד, וּבָאָה וְאָמְרָה: נִתַּן לִי יָבָם וָמֵת, בֵּין שֶׁאָמְרָה: מֵת בַּעְלִי וְאַחַר כָּךְ מֵת יְבָמִי, בֵּין שֶׁאָמְרָה: מֵת יְבָמִי וְאַחַר כָּךְ מֵת בַּעְלִי, נֶאֱמֶנֶת:

If she and her husband went overseas by themselves, and she came [back] and said "a *yavam* was given to me, and he died," whether she said "my husband died, and then my *yavam*," or whether she said "my *yavam* died, and then my husband died," she is believed.

Se’if 3ג׳

נֶאֱמָן עֵד אֶחָד לְהָעִיד לִיבָמָה שֶׁמֵּת בַּעְלָהּ, וּמִתְיַבֶּמֶת עַל פִּיו; אוֹ שֶׁמֵּת יְבָמָהּ, שֶׁתִּנָּשֵׂא לַשּׁוּק; אוֹ לוֹמַר: מֵת בַּעֲלִיךְ וְאַחַר כָּךְ מֵת בְּנֵךְ; וַאֲפִלּוּ עֶבֶד אוֹ שִׁפְחָה אוֹ אִשָּׁה אוֹ כּוּתִי מֵסִיחַ לְפִי תֻּמּוֹ, אוֹ עֵד מִפִּי עֵד, נֶאֱמָן לְהָעִיד בְּמִיתַת הַיָּבָם כְּמוֹ שֶׁנֶּאֱמָן בְּמִיתַת הַבַּעַל, וְדִין עֵדוּת זוֹ כְּדִין אוֹתוֹ עֵדוּת לְעִנְיַן עֵדִים הַמַּכְחִישִׁים זֶה אֶת זֶה בְּמִיתַת הַיָּבָם לְכָל דָּבָר. הַגָּה: וְיֵשׁ אוֹמְרִים דְּאֵין עֵד אֶחָד נֶאֱמָן לוֹמַר שֶׁמֵּת יְבָמָהּ, לְהַתִּירָהּ לְעָלְמָא:

A single witness witness is trusted to testify that a *yevamah's* husband died, and she can enter levirate marriage based on his testimony. Or, [to testify] that her husband died, [permitting her] to marry [anyone from] the marketplace. Or to say "Your husband died, and afterward, your son died." And even a male slave, female slave, woman, Samaritan speaking off-the-cuff, or a witness [testifying to] what another witness said is trusted to testify that the *yavam* died, just as he is trusted regarding the death of the husband. And the rule for this testimony is the same as the rule for that testimony regarding witnesses who contradict each other about the death of the *yavam*, for all matters. Rem"a: And there are those who say that a single witness id not trusted to say that her *yavam* died, to permit her to [marry anyone in] the world.