Reference for Yevamot 117:6

ומה ראית הא אישתני גופה והא לא אישתני גופה:

her body has undergone a change;<span class="x" onmousemove="('comment',' And she may, therefore, be regarded as a different person. ');">¹⁶</span> in that of the other her body underwent no change. <b><i>MISHNAH</i></b>. A HIGH PRIEST SHALL NOT MARRY A WIDOW<span class="x" onmousemove="('comment',' V. Lev. XXI, 14. ');">¹⁷</span>

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