Reference for Yevamot 238:3

לא תנשא ולא תתייבם וכו': ולעולם

as well as the majority principle<span class="x" onmousemove="('comment',' Miscarriages and the births of females constitute a majority against the minority of births of viable males. ');">⁷</span> [points] to [the permissibility of marriage with] any stranger,<span class="x" onmousemove="('comment',' Lit., 'to the market'. ');">³</span> so that [viable] males<span class="x" onmousemove="('comment',' Only a viable male child exempts a woman from the levirate obligations. ');">⁸</span>

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