Reference for Yevamot 230:4

אמר ליה רבא מי דמי התם קאמרי סימנים הכא שומשמי מאי סימנא אית להו ודקאמר כן וכן הויין אימר חושבנא איתרמי

Surely we learned: If a man found a vessel on which was inscribed a Kof it is korban;<span class="x" onmousemove="('comment',' Lit., 'sacrifice', i.e., consecrated. ');">⁹</span> if a Mem, it is ma'aser;<span class="x" onmousemove="('comment',' Tithe. ');">¹⁰</span> if a Daleth it is demu'a;<span class="x" onmousemove="('comment',' A 'mixture' of terumah and unconsecrated produce. Others read, [H] demai, produce concerning which it is uncertain whether it had been tithed. ');">¹¹</span>

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