Reference for Bava Metzia 177:8

והתניא הבודל בתמרים ובגרוגרות פועל אוכל בו אמר רב פפא כי תניא ההיא בתוחלני

and the worker may eat whilst engaged thereon; so during every thing which is done at the completion of its labour, the worker may eat. Hence weeding amongst garlic and onions is excluded: as it is not the completion of the work,<span class="x" onmousemove="('comment',' Of producing these vegetables. ');">⁶</span>

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