Reference for Shevuot 86:5

אמר שמואל האי מאן דאוזפיה אלפא זוזי לחבריה ומשכן ליה קתא דמגלא אבד קתא דמגלא אבד אלפא זוזי אבל תרתי קתאתי לא

swears that it is not in his possession,<span class="x" onmousemove="('comment',' For he may not have lost the pledge, but may have become enamoured of it and desired to retain it; he therefore says that he lost it, and wishes to pay its value. Consequently, he must take an oath that it is really not in his possession.');">⁶</span> and the other one<span class="x" onmousemove="('comment',' The borrower.');">⁷</span>

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