ט יְבָמָה שֶׁלֹּא הָיָה לָהּ עַל בַּעְלָהּ כְּתֻבָּה, מִפְּנֵי שֶׁהִיא אֲסוּרָה עָלָיו, וְהִיא מֻתֶּרֶת לַיָּבָם, אִם רָצָה כּוֹנֵס וְאֵין לָהּ כְּתֻבָּה, כְּדֶרֶךְ שֶׁלֹּא הָיָה לָהּ עַל בַּעְלָהּ. וְדַוְקָא שֶׁלֹּא כָּתַב לָהּ, אֲבָל אָסוּר לְהַשְׁהוֹתָהּ בְּלֹא כְּתֻבָּה (הַמ"מ פ"ב). וְדִינָהּ עִם יְבָמָהּ בָּתוֹסָפוֹת, כְּמוֹ שֶׁהָיָה לָהּ עַל בַּעְלָהּ. אֲבָל אִם לֹא כָּתַב לָהּ בַּעְלָהּ כְּתֻבָּה [אוֹ שֶׁמָכְרָה לוֹ], אוֹ שֶׁמָּחֲלָה לוֹ, צָרִיךְ הַיָּבָם לִכְתֹּב לָהּ כְּתֻבָּה כְּדֶרֶךְ כָּל הָאַלְמָנוֹת. הַגָּה: וְכֵן אִם לֹא הָיוּ נְכָסִים לְבַעְלָהּ הָרִאשׁוֹן, יֵשׁ לָהּ כְּתֻבָּה מָנֶה מִשֵּׁנִי, כְּדִין אַלְמָנָה (טוּר). הָיוּ לָהּ בָּנוֹת מִן הַיָּבָם, אִם יֵשׁ לָהּ כְּתֻבָּה עַל נִכְסֵי יָבָם, גַּם הַבָּנוֹת נִזּוֹנוֹת מִן הָאַחִים. וְאִם אֵין לָהּ כְּתֻבָּה עַל נְכָסָיו, גַּם הַבָּנוֹת אֵינָן נִזּוֹנוֹת מִן הָאַחִין, מִכָּל מָקוֹם הָאַלְמָנָה נִזּוֹנֵית כָּל יְמֵי מֵגַר אַלְמְנוּתָהּ (רַ"ן פֶּרֶק נַעֲרָה):
9 A yevam who does not have a marriage contract with her husband because they are not allowed to be married to each other, but she is permitted to her yavam, if the yavam wants to perform yibum with her she does not receive a marriage contract, just as she did not have one with her first husband. And only if the first husband did not give her a contract, but it is forbidden to remain married to a woman without giving her a contract (MM in Ch.2). Her status regarding additional provisions in the contract is just as she received from her first husband. But if her husband did not write her a contract, [or she sold it] or she declined it, the yavam must write her a contract as all widows receive. Rema: If her first husband had no assets, she receives a contract of 100 zuz from her second husband (the yavam) like any widow (Tur). If she had sons with the yavam, if she has a contract against the property of the yavam, her daughters are also fed like the sons from that. If she does not have a contract against his property, the daughters are not fed with the sons, nevertheless the widow is fed all the days she remains a widow (Ran Chapter Naara)