Reference for Yevamot 83:5

וכן שאר כל הנשים: בשלמא יבמה כדאמרן אלא שאר כל הנשים אמאי

where only] an ordinary prohibition<span class="x" onmousemove="('comment',' Marriage by the widow with a stranger during pregnancy. ');">⁷</span> [is involved]!<span class="x" onmousemove="('comment',' Hence, whenever the halizah was performed three months after the husband's death, the widow may forthwith be permitted to marry. ');">⁸</span>

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