Reference for Bava Metzia 19:13

<big><strong>מתני׳</strong></big> ראה את המציאה ונפל עליה ובא אחר והחזיק בה זה שהחזיק בה זכה בה:

But if he said to him: 'Do work for me to-day.' the labourer's find belongs to the employer!<span class="x" onmousemove="('comment',' Since the work is not specified it includes anything that the labourer may do during the time of his employment, so that the object that he finds and acquires during that time belongs to the employer. This would show that when one lifts up a found object for his neighbour the neighbour acquires it — in contradiction to R. Nahman and R. Hisda. ');">¹³</span>

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