משנה: כֵּיצַד אֵשֶׁת אָחִיו שֶׁלֹּא הָיָה בְעוֹלָמוֹ. שְׁנֵי אַחִים וּמֵת אֶחָד מֵהֶם וְנוֹלַד לָהֶן אָח וְאַחַר כָּךְ יִבֵּם הַשֵּׁנִי אֶת אֵשֶׁת אָחִיו וָמֵת. הָרִאשׁוֹנָה יוֹצֵאת מִשּׁוּם אֵשֶׁת אָחִיו שֶׁלֹּא הָיָה בְעוֹלָמוֹ וְהַשְּׁנִיָיה מִשּׁוּם צָרָתָהּ. עָשָׂה בָהּ מַאֲמָר וָמֵת שְׁנִיָיה חוֹלֶצֶת וְלֹא מִתְיַיבֶּמֶת.
MISHNAH: In which way “the wife of his brother who did not live in his world”? There were two brothers, one of them died, then a brother was born to them, and after that the second brother took his brother’s wife in levirate, and died. The first woman leaves as widow of his brother who did not live in his world and the second one because she is her co-wife. If he had “bespoken” her, the second performs ḥalîṣah but not levirate.