מכשירין ה׳:י׳ - ה׳:י״א

המערה מחם לחם – here also it is concerned with liquids that are in the upper vessel that empties from it which are pure/clean, and that the lower vessel that empties into it are impure.

מצונן לחם טמא – that the lower [vessel] there brings up vapor to the upper cold vessel and defiles it, that the cloud [of vapor] that rises from the hot [in the lower vessel] is considered like liquid.

וכוחו של תחתון יפה (that the force of the lower was stronger) – that its heat is greater than that of the upper [vessel]. But the Halakha is not according to Rabbi Shimon, for since the upper [vessel] is hot, even though the lower [vessel] is hotter than it (i.e., the upper vessel), the activity of the lower [vessel] is not recognized in the upper [vessel] and does not defile it.

המגיסה בקדירה (she stirs the pot) – she turns with a spoon that is in her hand the cooked dish in the pot.

אם הזיעה ידיה – from the vapor of the pot, her hands are made unclean/defiled as if she touched the liquid that is in the pot.

היו ידיה טמאות – if her hands sweated, the sweet is defiled on account of her hands and the pot is defiled, because the vapor makes a connection between the sweat that is on her hands to the liquids that are in the pot.

ר' יוסי אומר אם נטפו – the pot is not impure unless they dripped a drop at a time from the sweat that is in her hands into pot. But the Halakha is not according to Rabbi Yossi.

היין שבכף טהור – and it doesn’t make it susceptible/fit [to receive ritual defilement], but it was not considered to be a liquid until he would empty it into the [other] vessel. And it is like he lacks a designation of liquids in regard to susceptibility [for ritual impurity, so also he lacks a designation of liquids regarding defilement and regarding wine poured as a libation.