Reference for Bava Batra 54:2

דיקא נמי דקתני כל שהוא ש"מ

— Here we are speaking of [the first-fruits of] wheat. This is indicated also by the expression in the Mishnah 'the very smallest'.<span class="x" onmousemove="('comment',' Which could not be applied to land on which a tree was planted. ');">²</span>

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