Reference for Bava Batra 124:9

מבלע ואיכא עליה לא מבלע וליכא עליה אתמר לה להאי גיסא ואתמר לה להאי גיסא שודא דדייני:

the purchaser acquires it. And even if it does not lie within the adjoining two, [he fails to acquire it] only if there is on it a clump of date trees, or it has an area of nine <i>kabs</i>,<span class="x" onmousemove="('comment',' I.e., sufficient for the sowing of nine kabs of seed. In these cases it counts as a separate field. ');">⁸</span>

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