Reference for Gittin 65:10

אמר ליה רבינא לרב אשי תינח דקדיש בכספא קדיש בביאה מאי איכא למימר שויוה רבנן לבעילתו בעילת זנות:

This is the ruling of Rabbi. Rabban Simeon b. Gamaliel, however, says that he can neither cancel it nor add any additional conditions, since if so, what becomes of the authority of the <i>Beth din</i>?<span class="x" onmousemove="('comment',' Lit., 'how is the power of the Beth din (left) unimpaired.' The Beth din of Rabban Gamaliel which made the regulation. ');">⁹</span>

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