A jar that was full of clean liquids, with a siphon in it, and it had a tightly fitting cover and was in a tent in which there was a corpse: Bet Shammai says: both the jar and the liquids are clean but the siphon is unclean. And Bet Hillel says: the siphon also is clean. Bet Hillel changed their mind and ruled in agreement with Bet Shammai.

If a sheretz was found beneath the bottom of an oven, the oven remains clean, for I can assume that it fell there while it was still alive and that it died only now. If a needle or a ring was found beneath the bottom of an oven, the oven remains clean, for I can assume that they were there before the oven arrived. If it was found in the wood ashes, the oven is unclean since one has no ground on which to base an assumption of cleanness.

A sponge which had absorbed unclean liquids and its outer surface became dry and it fell into the air-space of an oven, the oven is unclean, for the liquid would eventually come out. And the same with regard to a piece of turnip or reed grass. Rabbi Shimon says: the oven is clean in both these cases.

Potsherds that had been used for unclean liquids which fell into the air-space of an oven, if the oven was heated, it becomes unclean, for the liquid would eventually come out. And the same with regard to fresh olive peat, but if it was old, the oven remains clean. If it was known that liquid emerges, even after the lapse of three years, the oven becomes unclean.

If olive peat or grape skins had been prepared in conditions of cleanness, and unclean persons trod upon them and afterwards liquids emerged from them, they remain clean, since they had originally been prepared in conditions of cleanness. If a spindle hook was sunk into the spindle, or the iron point into the ox goad, or a ring into a brick, and all these were clean, and then they were brought into a tent in which was a corpse, they become unclean. If a zav caused them to move they become unclean. If they then fell into the air-space of a clean oven, they cause it to be unclean. If a loaf of terumah came in contact with them, it remains clean.

If there was netting placed over the mouth of an oven, forming a tightly fitting lid, and a split appeared between the oven and the colander, the minimum size [to allow impurity to enter] is that of the circumference of the tip of an ox goad that cannot actually enter it. Rabbi Judah says: it must be one into which the tip can actually enter. If a split appeared in the netting, the minimum size is the circumference of the tip of an ox goad that can enter it. Rabbi Judah says: even if it cannot enter. If the split was curved it must not be regarded as straight, and still the minimum size must be the circumference of the tip of an ox goad that can actually enter.

If there was a hole in the "eye" of an oven, the minimum size [for it to leave the category of being tightly closed] is the circumference of a burning spindle staff that can enter and come out [without being extinguished]. Rabbi Judah says: one that is not burning. If the hole appeared at its side, the minimum size must be that of the circumference of a spindle staff that can enter and come out while it is not burning. Rabbi Judah says: while burning. Rabbi Shimon says: if the hole is in the middle its size must be such that a spindle staff can enter it, but if it was at the side it need only be such as the spindle staff cannot actually enter. And similarly he used to rule concerning the stopper of a jar in which a hole appeared: the minimum size is the circumference of the second knot in an oat stalk. If the hole was in the middle the stalk should be able to enter, and if at the side it need not be able to enter. And similarly he used to rule concerning large stone jars in the stoppers of which appeared a hole. The minimum size is the circumference of the second knot in a reed. If the hole was in the middle the reed must be able to enter it, and if it was at the side the reed need not be able to enter it. When is this so? When the jars were made for wine, but if they were made for other liquids, if they have even the smallest hole, they are unclean. When is this so? When the holes were not made by a person, but if they were made by a person, if they have even the smallest hole, they are unclean. If a hole appeared [in other vessels its prescribed size ] is as follows: if the vessel was used for food, [the hole must be one] through which olives can fall out; if for liquids, one that lets out liquids; If for either, the greater restriction is imposed [even with regard to the issue of] a tightly fitting cover [the size of the hole need only be] one that admits a liquid.