Reference for Yevamot 120:1

והא אמר רבי שמעון ראויה לכהן גדול מטמא לה שאין ראויה לכהן גדול אין מטמא לה שאני התם דרבי רחמנא קרובה

but, surely, R. Simeon said, 'He may defile himself for one who is fit for a High Priest, but may not defile himself for one who is not fit for a High Priest'!<span class="x" onmousemove="('comment',' One divorced is not fit for a High Priest! ');">¹</span> — There<span class="x" onmousemove="('comment',' Defilement by a common priest. ');">²</span> it is different, because the All Merciful has included her [by the expression] near.<span class="x" onmousemove="('comment','[H] sing. ');">³</span>

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