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.

The covering stone and the buttressing stone [of a grave] defile by contact and overshadowing but not by carriage. Rabbi Eliezer says: they do defile by carriage. Rabbi Joshua says: if there is grave dust beneath them, they defile by carriage, but if not they do not defile by carriage. What is the buttressing stone? That upon which the covering stone is supported. But the stone that serves as buttress to the buttressing stone is clean.

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.