Reference for Yevamot 51:8

נימא מתניתין דלא כרבי דאי כרבי האמר בתרי זימני הויא חזקה

If you prefer I might say that the one as well as the other [refers to the case] where there were no quarrels, and yet there is no difficulty: The former<span class="x" onmousemove="('comment',' That implied in our Mishnah. ');">¹⁶</span> is a case where the husband had led on [to the divorce];<span class="x" onmousemove="('comment',' Hence there is cause for suspicion. ');">¹⁹</span> in the latter,<span class="x" onmousemove="('comment',' V. supra note 8. ');">²⁰</span>

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