Keilim 7:4-5

Keilim 7:4

If the extension is not attached to the stove, then when it’s three fingerbreadths tall it is susceptible to ritual impurity through contact and through its airspace but it if it’s lower than this, it is insusceptible. The same is true if the extension is smooth (i.e., it doesn’t have a rim – even if it’s attached). If a tripod on a stove was three fingerbreadths tall, it is susceptible to impurity through contact and through its airspace; lower than this (i.e., closer to the stove), it is all the more susceptible, even if there are four legs instead of three.

Keilim 7:5

Rabbi Meir says that if one of the tripod’s legs was removed, the remaining ones are susceptible to ritual impurity through contact but not through their airspace; Rabbi Shimon, however, declares them insusceptible. If one originally made only two legs, one opposite the other, Rabbi Meir says they are susceptible to impurity through contact and airspace, while Rabbi Shimon says they are insusceptible. If they were taller than three fingerbreadths, Rabbi Meir says that the section from three fingerbreadths down is susceptible to impurity through contact and airspace, while the section higher than three fingerbreadths is susceptible to impurity through contact but not through airspace; Rabbi Shimon declares (the part above three fingerbreadths) insusceptible. If the legs were withdrawn from the stove’s edge, Rabbi Meir says that the part within three fingerbreadths is susceptible to impurity through contact and airspace and the part farther away than three fingerbreadths is susceptible through contact but not airspace; Rabbi Shimon says that the part farther away than three fingerbreadths is insusceptible.