Reference for Gittin 38:20

וה"מ דאשתכח חדא אבל ב' ג' מדהא הואי הא נמי הואי וגיטא אימור עכברים שקלוה

If the letters come to light, then obviously there was writing, and if not, then there is nothing in it. And if the letters do come to light, what of it? It is only now that they come to light?<span class="x" onmousemove="('comment',' And when she was divorced there was no writing. ');">¹⁸</span>

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