Reference for Pesachim 52:11

אימור דשמעת ליה לרבי משום דיש שבח עצים בפת זה וזה גורם מי שמעת ליה אלא לא קשיא הא ר' אליעזר הא רבנן

it upon the coals, all agree that it is permitted.<span class="x" onmousemove="('comment',' When the nutshells or stubble are burnt through and a mass of coals, they are regarded as already destroyed and not in existence. Consequently, if he bakes the bread upon them, the bread is not regarded as having benefited directly from them, and even Rabbi admits that it is permitted.');">²¹</span> But it was taught: Whether new or old, it must be allowed to cool? - There is no difficulty: one agrees with Rabbi, the other with the Rabbis.<span class="x" onmousemove="('comment',' V. p. 121, n. 11.');">²²</span> Granted that you know Rabbi [to rule thus] because the benefit<span class="x" onmousemove="('comment',' Lit., 'improvement'.');">²³</span>

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