Reference for Shevuot 74:4

הכא נמי כדרבינא

if after the witnesses came he confessed, he pays double,<span class="x" onmousemove="('comment',' As if he had been the thief himself, but he pays no fifth; v. B.K. 63b.');">⁷</span> and brings a guilt offering!<span class="x" onmousemove="('comment',' Though there are witnesses; this is opposed to Rabbah's view.');">⁸</span>

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