Reference for Nedarim 24:7

אלא דאפרשינהו בלישה דשקיל חדא מחמץ וחדא מן חלות וחדא מן רקיקים וחדא מן רבוכה

Even as R. Tobi b. Kisna said in Samuel's name: If the thanksgiving loaves are baked as four loaves [instead of forty], it suffices. But does not the Writ state forty?<span class="x" onmousemove="('comment',' Not actually. But since the Writ speaks of four species, and terumah (I.e., one in ten) was to be given from each, it follows that forty had to be made. ');">⁷</span>

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