[If] someone touches a corpse and utensils or forms a roof over a corpse and touches utensils, [the utensils] become tamei. [If] he forms a roof over a corpse and over utensils, or he touches a corpse and forms a roof over utensils, [the utensils] remain tahor. If his hand is a handbreadth square, the utensils are tamei. There are two houses, each of which contains [a piece of corpse flesh] half the size of an olive, and a person stretches his hands into the houses. If his hands are as big as a square handbreadth, tumah spreads. If not, tumah does not spread.