Reference for Shabbat 36:4

והשתא דאמר מר גזירה שמא יחתה בגחלים האי קדרה חייתא שרי לאנוחה ע"ש עם חשיכה בתנורא מ"ט כיון דלא חזי לאורתא אסוחי מסח דעתיה מיניה ולא אתי לחתויי גחלים ובשיל שפיר דמי בשיל ולא בשיל אסיר ואי שדא ביה גרמא חייא שפיר דמי

Let us decree also in respect of wool in the dye kettle? — Samuel answered: This refers to a kettle removed [from the fire]. But let us fear that he may stir within it?<span class="x" onmousemove="('comment',' Sc. the wool within the kettle, to make it absorb the dye more thoroughly. This too is forbidden. ');">¹⁰</span> — This refers to [a kettle] removed from [the fire] and sealed down.<span class="x" onmousemove="('comment',' Hence he is not likely to forget.-In this and the following cases the fear is not that he may do these things intentionally but unintentionally in a moment of forgetfulness. ');">¹¹</span> And now that the Master said: 'It is a preventive measure, lest one rake the coals', a raw dish<span class="x" onmousemove="('comment',' I.e., a pot containing a raw dish. ');">¹²</span>

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