Reference for Shevuot 9:11

ותו גבי תורה דכתיב (איוב כח, כא) ונעלמה מעיני כל חי ומעוף השמים נסתרה מכלל דאיכא דהוה ידע ביה והכתיב (איוב כח, יג) לא ידע אנוש ערכה

[Surely not, for] if he knew, the waters would not test her, as it is taught: And the man shall be clear from iniquity, and that woman shall bear her iniquity:<span class="x" onmousemove="('comment',' Num, V, 31.');">⁸</span> when the man is clear from iniquity, the waters test his wife; but when the man is not clear from iniquity,<span class="x" onmousemove="('comment',' Having known of her intrigue and yet cohabited with her.');">⁹</span>

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