Reference for Bava Metzia 59:1

בתורי דנפיש פסידייהו:

to [workers with] oxen, who can cause much loss.<span class="x" onmousemove="('comment',' Either by failing to plough up the land properly, so that the subsequent crop is a poor one (Tosaf.), or through carelessly driving the ox carts over the crops when engaged in reaping or vintaging, and so causing damage both to oxen and plants (Rashi). ');">¹</span>

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