These things defile by overshadowing: a corpse, an olive-sized [portion of flesh] of a corpse, an olive-sized [portion] of nezel, a ladleful of corpse-mold, the spine or the skull, [a] full limb of a corpse, or [a full] limb [severed] from a living person with the appropriate amount of flesh, a quarter [of a kav] of bones from the structural majority or numerical majority, and the structural majority or numerical majority [of the bones] of a corpse even though they do not amount to a quarter [of a kab]; [all these] are unclean. How many [bones] form the numerical majority? One hundred and twenty-five.

[The following likewise defile:]A quarter [of a log] of blood, A quarter [of a log] of mixed blood from one corpse. Rabbi Akiva says: [even] from two corpses. [With regard to] the blood of a child that has completely flowed forth: Rabbi Akiva says: [it defiles] in even the smallest quantity, But the sages say: [there must be] a quarter [of a log]. [With regard to] an olive-sized [portion] of [corpse] worms whether alive or dead: Rabbi Eliezer declares [it] unclean, like the flesh, But the sages declare [it] clean. [With regard to] the ashes of burnt persons: Rabbi Eliezer says: the [minimum] quantity [for defilement is] a quarter [of a kav]. But the sages declare [them to be] clean. A ladleful and [a little] more of grave-dust is unclean. Rabbi Shimon declares [it to be] clean. A ladleful of corpse-mold mixed with water is not [regarded as] joined [into one mass] for [the purposes of] defilement.

The following defile by contact and carriage but not by overshadowing: A bone of barleycorn size, Earth from a foreign country, A bet peras, A limb of a corpse, or a limb [severed] from a living person which has no longer its appropriate flesh, A spine or a skull which is deficient. How much is [considered] a deficiency in the spine? Bet Shammai say: two vertebrae, But Bet Hillel say: even one vertebra. And in the skull? Bet Shammai say: [the size of a] hole [made] by a drill, But Bet Hillel say: as much as would be taken from a living person and he would die. Of what drill did they speak? Of the small one [used] by physicians, the words of Rabbi Meir. But the sages say: of the large one in the Temple-chamber.

These are clean if they are deficient:An olive-sized [portion] of a corpse; An olive-sized [portion] of nezel, A ladleful of corpse-mold, A quarter [of a log] of blood, A bone of the size of a barley-corn, And a limb [severed] from a living person, the bone of which [limb] is deficient.

A backbone or a skull [made up from the bones] of two corpses, A quarter [of a log] of blood from two corpses, A quarter [of a kav] of bones from two corpses, A limb of a corpse from two corpses, And a limb [severed] from a living person, [such a limb being made up] from two persons, Rabbi Akiva declares [the all] unclean But the sages declare them clean.

A bone the size of a barley-corn that is divided into two: Rabbi Akiva declares it unclean But Rabbi Yohanan ben Nuri declares it clean. Rabbi Yohanan ben Nuri says: they did not say 'bones’ the size of a barley-corn, but ‘bone’ the size of a barley-corn. A quarter [of a kav] of bones crushed fine, and there is not a single [bone] the size of a barley-corn: Rabbi Shimon declares it clean But the sages unclean. A limb [severed] from a living person which has been divided into two is clean. Rabbi Yose declares [it] unclean; But he agrees that if it is taken from a living person by halves it is clean.