. [A quarter-log of corpse blood] was spilled in the air — if the place [where the blood spilled] was on an incline, and [a person] formed an ohel over part [of the blood], he remains tahor. [If the blood] was in a crack or if it congealed, [the person] becomes tamei. [If the blood] was spilled onto the threshold [of a house] that inclines either inward or outward, and the house forms a roof over it, [the house] remains tahor. [If the blood] was in a crack or [if] it congealed, [the house] becomes tamei. Every part of a corpse is tamei, except for the teeth, hair, and nails. But while they are connected [to the body], they are all tamei.

How so? [If] a corpse is outside, and its hair is inside, the house becomes tamei. A bone has on it an olive-sized piece of flesh. If part of this bone was brought under the roof of a house, [the contents of the house] become tamei. There are two bones, each of which has on it half an olive’s size piece of flesh. [If] part of [each bone] was brought under the roof of a house, [the contents of the house] become tamei. [If they were] attached by man, [the house] remains tahor, because whatever is attached by man is not considered an [inherent] attachment.