Reference for Bava Metzia 107:6

הא קרן יש לו מאי טעמא קרן דמעכב בדאורייתא איתא בדרבנן חומש דלא מעכב בדאורייתא ליתא בדרבנן

is not subject to the law of a 'fifth' or to the law of removal.<span class="x" onmousemove="('comment',' If one redeems second tithe of demai, he need not add a fifth. Again, ordinary (Biblical) tithes had (in accordance with Deut. XIV, 28ff.) to be removed from the house in the third year after the year of Release, but not demai (Dem. I, 2). ');">⁹</span> [This implies,] but the law of the principal does apply to it.<span class="x" onmousemove="('comment',' I.e., unless redeemed at par it may not be eaten outside Jerusalem. ');">¹⁰</span>

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