משנה: הַכּוֹנֵס אֶת יְבִמְתּוֹ וְנִמְצֵאת מְעוּבֶּרֶת וְיָלְדָה בִּזְמַן שֶׁהַוְולָד שֶׁל קַיָימָא יוֹצִיא וְחַיָיבִין בְּקָרְבָּן. וְאִם אֵין הַוְולָד שֶׁל קַיָימָא יְקַיֵים. סָפֵק בֶּן תֵּשַׁע לָרִאשׁוֹן סָפֵק בֶּן שִׁבְעָה לָאַחֲרוֹן יוֹצִיא וְהַוְולָד כָּשֵּׁר וְחַיָיבִין בְּאָשָׁם תָּלוּי.
MISHNAH: If somebody marries his sister-in-law but she turned out to have been pregnant and gave birth. If the child is alive, [the levir] has to divorce her and they must bring a sacrifice. If the child is not alive, he may keep her. If it is doubtful whether [the child is] a nine-month child of the first [brother] or a seven-month of the second, he has to divorce her, the child is legitimate, and they are obligated to bring a reparation offering for an uncertain case.