Reference for Bava Batra 139:6
איתיביה חוץ מחצי חרוב פלוני חוץ מחצי סדן פלוני שאר חרובין לא קנה מאי לאו שאר חרובין הוא דלא קנה הא מה ששייר באותו חרוב קנה
— He replied: He does not acquire them. R. Aha then raised an objection [from the following]: [If the vendor says], Except such-and-such a carob tree, except such-and-such a Sycamore, he does not obtain possession. Does this not mean that he fails to acquire possession of that carob, but he does acquire possession of the rest? — No, he replied; he fails to acquire possession of the other carobs also. The proof is this. Suppose [he was selling him a field and] said to him, 'My field is sold to you with the exception of such-and-such a field',<span class="x" onmousemove="('comment',' Bordering on the other. ');"><sup>6</sup></span>