[In the case of] a house full of straw where there is less than a cubed handbreadth between [the straw] and the joists and tumah is in the inner area, utensils near the exit become tamei. [If] tumah is in the outer area, and utensils are in the inner area — if the [inner] area is a handbreadth by a handbreadth and a handbreadth high, [the utensils remain] tahor; and if not, they become tamei. [However,] if there is a cubed handbreadth between the straw and the joists, [the utensils] become tamei in all circumstances.