Reference for Temurah 7:22

אדרבה תסתיים דר' אלעזר הוא דאמר לוקה דתנן

If one has before him two baskets of tebel [untithed produce] and he says: The tithe of this [basket] shall be in that one, the first basket is considered tithed.<span class="x" onmousemove="('comment',' Although he had not actually made the separation.');">¹⁷</span>

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