Commentary for Bava Metzia 3:9
וליתני כולה שלי ולא בעי אני מצאתיה אי תני כולה שלי הוה אמינא בעלמא דקתני מצאתיה בראיה בעלמא קני תנא אני מצאתיה והדר תנא כולה שלי דממשנה יתירה אשמעינן דראיה לא קני
replied: The first plea applies to a case of finding, but the second plea applies to a case of buying and selling.<span class="x" onmousemove="('comment',' But not to a case where each one maintains that he has made the garment, for then one of them is bound to be lying. ');"><sup>7</sup></span>
Rashi on Bava Metzia
In general, when he teaches, "I found it": In every place that we taught that one who finds a lost object, acquires it - I would have said that he acquires it from the time of seeing [it]. For no teacher made us understand that one only acquires it by picking it up. That is why we are made to understand this here from the extra [words in the] mishnah.
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