[Regarding] a needle or a ring that were found in the floor of an oven, visible but not protruding [into the oven], if one bakes dough, and it touches [the ring or needle, the oven] is tamei. With regard to which [kind of] dough did they state [this]? Intermediate dough. [If] they were found in the coating of an oven surrounded by a sealed cover, if [they are] in a tamei [oven] they are tamei, and if [they are] in a tahor [oven] they are tahor. [If] they were found in the stopper of a barrel in its side, they are tamei. Opposite its mouth, they are tahor. [If] they are visible from within it but [do] not [protrude] into its airspace, they are tahor. [If they were] sunken into it and under them was like a garlic peel, they are tahor.

[Regarding] a barrel that is full of tahor beverages and a siphon is in it, [which is] surrounded by a sealed cover and placed under the same roof as a corpse, Beis Shammai say: The barrel and the beverages are tahor, but the siphon is tamei. And Beis Hillel say: Even the siphon is tahor. [Subsequently,] Beis Hillel reversed [themselves] to rule in accordance with the view of Beis Shammai.