Shabbat

What is the difference between this and the bung of a barrel? — Said Raba to him: The one is an integral part thereof, whereas the other is not. R. Jeremiah pointed out a contradiction to R. Zera. We learnt: The fuller's loosely stitched bundle,  or a bunch of keys, or a garment stitched together with kil'ayim thread  are counted as connected in respect of uncleanness,  until one begins to undo them. This proves that they are [regarded as] joined even not at the time of work.  But the following is opposed thereto: If a stick is improvised to serve as a handle for an axe, it is counted as connected in respect of uncleanness at the time of work. [Thus,] only at the time of work, but not otherwise? — There, he replied, a man is wont to throw it [the handle] among the timber when it is not being used. Here, a man prefers [that pieces remain together]  even not at the time of work, so that if they are soiled he can rewash them. In Sura the following discussion was recited in R. Hisda's name. in Pumbeditha it was recited in R. Kahana's name-others state, in Raba's name. Who is the Tanna responsible for the statement of the Rabbis: Whatever is joined to an article is counted as the article itself? — Said Rab Judah in Rab's name, It is R. Meir. For we learnt: The receptacles on a stove for the oil-flask, spicepot, and the lamp are defiled through contact, but not through air space: this is R. Meir's opinion. But R. Simeon declares them clean.  Now, as for R. Simeon, it is well: he holds that they are not as the stove. But according to R. Meir, — if they are as the stove, let them be defiled even through air space; if they are not as the stove, let them not be defiled even through contact? In truth, they are not as the stove, but the Rabbis decreed [uncleanness] in their case. If they decreed it, let them be defiled even through air space too? — The Rabbis made a distinction, so that people might not come to burn terumah and holy food on account of them. Our Rabbis taught: A shears of separate blades  and the cutter of a [carpenter's] plane are [counted as] connected in respect of uncleanness,  but not in respect of sprinkling.  What will you: if they are both [counted as] connected, [they are so] even in respect of sprinkling too; if [they do] not [count as] connected, [they are not so] even in respect of defilement? — Said Raba: By Scriptural law, when in use they are [counted as] connected in respect of both defilement and sprinkling, when not in use, they are [counted as] connected in respect of neither defilement nor sprinkling,