[R egarding] a pot that is placed in an oven, [if] a sheretz is in the oven, the pot is tahor, for an earthenware utensil does not render utensils tamei. If there was in [the pot] beverage sufficient to moisten, [the beverage] became tamei and transmitted tumah. Thus, this [pot] says: “That which made you tamei did not make me tamei, and [yet] you have made me tamei.”