Reference for Yevamot 83:13

בשלמא תמתין ב' חדשים ותנשא לא דהיינו ספיקא אי בר תשעה לקמא אי בר שבעה לבתרא

R. Hanania raised an objection: In all these<span class="x" onmousemove="('comment',' prohibitions to marry or to contract levirate marriage. ');">²¹</span> I read a provision against incest, but here<span class="x" onmousemove="('comment',' The law of a three months' period of waiting before any widow or divorcee is permitted to marry. ');">²²</span>

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