Keilim 6:2 - 6:3

האבן שהיה שופת עליה ועל התנור (the stone that he was placing the cooking pot over/by the fire as well as on the oven) – land the stone was attached with plaster/clay.

עליה ועל האבן – that is one that is [affixed] with plaster and one that is not [affixed] with plaster.

ועל הסלע – that is attached from the Six Days of Creation.

טהורה – as it is written (Leviticus 11:35): “[an oven or stove] shall be smashed. They are impure [and impure they shall remain for you],” that which has a breaking up/cutting out has [ritual] defilement; that which does not have breaking up/cutting out does not have [ritual] defilement. From here, they (i.e., the Rabbis) stated that a stone that he was placing the cooking pot over and on the oven, or on it and on the portable stove on feet with caves for two pots , or on it and on the small stove with room for only one pot, are impure, because they have a breaking up/cutting out; [but] upon it and on the stone, upon it and upon a rock, upon it and upon the wall, it is [ritually] pure, because they don’t have breaking up/cutting out.

כירת הנזירים – to cook the peace offerings of a Nazir that the Kohen takes from them the cooked shoulder (see Deuteronomy 18:3 and Tractate Hullin, Chapter 10, Mishnah 1).

כירת טבחים – that they sell to the masses and they arrange many stones one after another and places the upon them many pots, where there is found one stone for two pots, but when one [of the stones] is defiled, the others are pure, this is a matter that is like the double inkstand that is taught in the Mishnah above in Chapter 2 [Mishnah 7], that if one of them is defiled, the other rest of them are not defiled.

שלש אבנים שעשאן שתין כירים – and the middle stone services both this one (i.e., the portable stove with caves for two pots) and that one (i.e., the other portable stove with caves for two pots).

האמצעית המשמשת את הטמאה – half of the middle one (i.e., stove) that services the outer one which is [ritually] impure is impure. But the half that services the outer one that is pure is pure.

נחלטה האמצעית לטמאה – and all of it (i.e., all three stones) are impure.

לשפות עליהן – [to set upon] the two outer ones (i.e., stones).

החזירה – [if he restored] the middle one (i.e., stone)

טהורה – for the first portable stove on feet with caves for two pots/כירה is abolished and it is as if he placed on it the large pot of the cauldron/kettle.

מקבלת טומאה משיסיקנה – for it (if plastered) requires heating like a new portable stove on feet with caves for two pots.