Reference for Bava Metzia 152:13

כי הא דאמר רבא האי מאן דאגר אגירי לרפקא ואתא מטרא ומלייה מיא אי סיירא לארעיה מאורתא

but if there are, and he [the first worker] says to him, 'Go out and engage one of these,' he has nothing but resentment against him.<span class="x" onmousemove="('comment',' In any case the term 'deceiving' is employed in this Baraitha to denote 'retracting' and so likewise in our Mishnah. ');">¹³</span> A tanna recited before Rab:<span class="x" onmousemove="('comment',' In connection with the above: 'if the ass-drivers went and found no grain etc.' ');">¹⁴</span> He must pay them in full. Whereupon he [Rab] observed: My uncle [R. Hiyya] said, 'Were it I, I would have paid them only as unemployed labourers:'<span class="x" onmousemove="('comment',' As explained on p. 441, n. 6; cf. also p. 398, n. 2. ');">¹⁵</span> yet you say. 'he must pay them in full'! But surely, it is taught thereon: But travelling with a load is not the same as travelling empty-handed, nor is working the same as idling! — Now it [the Baraitha] had not been completed before him [Rab].<span class="x" onmousemove="('comment',' I.e., when the tanna recited the Baraitha and said 'he must pay in full', he went no further, whereupon Rab observed that his uncle's view differed. ');">¹⁶</span> Others say, it had been completed before him,<span class="x" onmousemove="('comment',' I.e., the Tanna had added, 'but travelling with a load etc.', and yet Rab observed that his uncle differed. ');">¹⁷</span> and he [Rab] observed thus: My uncle said, 'Were it I, I would not have paid him at all';<span class="x" onmousemove="('comment',' It was their misfortune that the field proved to be a marsh. ');">¹⁸</span> yet you say [he must pay him] as an unemployed labourer! But this [Baraitha] opposes it! — There is no difficulty: the latter ruling is if he viewed the field the previous evening; the former, if he did not.<span class="x" onmousemove="('comment',' Rashi: if the labourer inspected the field the previous evening, he has no claim now, since when he undertook to plough it, he saw the condition of the field. Maim: If the land owner inspected it the previous evening, found it fit, and engaged workers, but overnight heavy rains turned it into a swamp, the labourers have no redress, since it was not the employer's fault. ');">¹⁹</span> Just as Raba said: If one engaged labourers to cut dykes, and rain fell and rendered it [the land] waterlogged [making work impossible], if he inspected it the previous evening,

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