Reference for Bava Kamma 197:8

סוף סוף למאי יהבה נהליה לרכוכי כיון דרככיה היינו שבחא לא צריכא דאגריה לביטשי ביטשא ביטשא במעתא דהיינו שכירות

why should the owner be transgressing<span class="x" onmousemove="('comment',' For surely by not paying purchase money in time a purchaser would not render himself liable to this transgression. ');">¹⁵</span> the injunction. Thou shalt not keep all night? — Said R. Mari the son of R. Kahana: [The work required in this case was] to remove the woolly surface of a thick cloth where there was no accretion.<span class="x" onmousemove="('comment',' To which the worker should acquire title. ');">¹⁶</span>

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