[Regarding] marc and grape skins that were made in [conditions of] taharah and temei’im walked on them, and afterward beverages emerged from them, they are tahor, for they were originally made in [conditions of] taharah. [Regarding] a spindle that swallowed [its] hook, an ox-goad that swallowed [its] nail, [or] a brick that swallowed a ring, and they are tahor, [if] they enter a tent [containing] a corpse, they become tamei. [If] a zav moves them, they become tamei. [If] they fell into the airspace of a tahor oven, they render it tamei. [If] a loaf of terumah touched them, it is tahor.