Una estufa doble que se dividió en dos partes a lo largo de su longitud no está sujeta a impurezas. [Si se divide a lo largo] su amplitud, está sujeto a impureza. Una estufa de una sola olla que se dividió en dos partes, por su longitud o por su ancho, no es susceptible a la impureza. La extensión alrededor de una estufa, siempre que tenga tres dedos de ancho, contrae impureza por contacto y también a través de su espacio aéreo, pero si es menor que esto, contrae impureza por contacto y no a través de su espacio aéreo. ¿Cómo determinan el espacio aéreo? El rabino Yishmael dice: Él escupe de arriba a abajo y, a través de esa distancia, contrae impureza a través del espacio aéreo. El rabino Eliezer ben Ya'acov dice: Si la estufa contrae impureza, la extensión también es impura, pero si la extensión se vuelve impura, la estufa no se vuelve impura.
Bartenura on Mishnah Kelim
כירה שנחלקה לארכה טהורה – a portable stove with caves for two pots that opened for two pots. But when it is divided lengthwise, the two placings on/over the fire were eliminated, but if it was divided widthwise, the two placings over the fire remain, this one alone and that one alone.
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English Explanation of Mishnah Kelim
A double stove which was split into two parts along its length is clean. Through its breadth is unclean. A single stove which was split into two parts, by its length or by its width, it is not susceptible to impurity. If a double stove was split lengthwise it is rendered unusable since each opening is cut in half. Therefore it is pure. However, if it split by its breadth, it is pure because it is still usable. In contrast, a single stove is rendered useless if it split, no matter how it is split. Therefore, in all cases it is pure.
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Bartenura on Mishnah Kelim
כופח – a place where there is an opening for one pot. But whether it is cracked lengthwise or whether it is cracked widthwise, all of the place where the pot is placed on/over the fire is eliminated.
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English Explanation of Mishnah Kelim
As to the extension around a stove, whenever it is three fingerbreadths high it contracts impurity by contact and also through its air-space, but if it is less it contracts impurity through contact and not through its air- space. The "extension" is an earthenware base that surrounds the stove. Occasionally pots were placed on the extension. If it is three fingerbreadths high, the minimum height of a stove, then it is subject to impurity through contact and through airspace. This means that if a defiling agent enters the stove's airspace or touches the inside of the stove, the extension is also impure. If it is less than three fingerbreadths high, then it is impure only if the stove is defiled by touching and not by airspace. It seems that in this case the extension is not a vessel in and of its own right, but only a "yad" an "appendage" of the stove. A "yad" cannot be defiled through airspace.
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Bartenura on Mishnah Kelim
חצר הכירה – like a kind of large, earthenware pan [without a lid] and the portable oven with caves for two pots sits in the middle attached to the courtyard.
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English Explanation of Mishnah Kelim
How is the air-space determined? Rabbi Ishmael says: He puts a spit from above to below and opposite it contracts impurity through the air-space. The mishnah questions how we determine the airspace of the extension. This is a problem because the extension surrounds the stove which is much higher than the extension. Rabbi Ishmael says that we take a spit and lay it diagonally from the top of the stove to the top of the extension. If a defiling agent enters its airspace below this diagonal line, it transmits its impurity.
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Bartenura on Mishnah Kelim
שלש אצבעות – that the walls of the courtyard are three fingers high. For just as the measure of the portable stove with caves for two pots, is three fingers at the outset, as is it is taught above in the Mishnah (Tractate Kelim, Chapter 5, Mishnah 2) in the Chapter “The Oven.” So as well is the measurement of the courtyard of the double stove, its height is not less than three fingers, but less than three [fingers], its airspace is not considered important. However, according to the Rabbis it defiles through contact. Alternatively, because there is something like a handle for the double stove, and the handle has contact, but not airspace.
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English Explanation of Mishnah Kelim
Rabbi Eliezer ben Jacob says: if the stove contracted impurity the extension is also unclean, but if the fender contracts impurity the stove does not become unclean. Rabbi Eliezer ben Yaakov considers the extension to be an appendage to the stove. Hence, if the stove becomes defiled, its extension is always impure, even if the stove contracted impurity through its airspace and the extension is less than three fingerbreadths high. However, an appendage cannot transmit impurity to the main vessel and therefore if the extension contracts impurity, the stove remains pure.
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Bartenura on Mishnah Kelim
כיצד משערין אותה – because a portable stove with caves for two pots is a great deal higher than the courtyard and we must measure what is considered the airspace of the courtyard.
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Bartenura on Mishnah Kelim
נותן את השפוד – one end on the lowest wall of the courtyard and the other end on the highest wall of the double stove, and everything that is below from the spit, if one suspended there an unclean reptile, even though it is a above from the walls of the courtyard as if it is suspended below, for all of this is considered the airspace of the courtyard.
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Bartenura on Mishnah Kelim
לא נטמאת הכירה – for the court [of the stove] is subsidiary to the portable stove with caves for two pots, but the portable double stove is not subsidiary to the court [of the stove]. But the Halakha is not according to Rabbi Eliezer ben Yaakov.
