E a volte affermavano in larga misura: un mestolo di muffa di cadavere si riferisce al grande mestolo di dottori; il fagiolo spezzato in caso di malattia della pelle si riferisce al tipo ciliziano; chi mangia su Yom Kippur una quantità della maggior parte di una grande data, si riferisce alla dimensione della data e alla sua fossa; nel caso di bucce di vino e olio [le buche] devono essere grandi quanto il loro tappo grande; nel caso di un buco per la luce che non è stato fatto da mani umane, la sua dimensione minima è quella di un pugno grande, riferito al pugno di Ben Batiah. Rabbi Yose disse: Ed è grande come una grande testa umana. E nel caso di uno fatto da mani umane, la dimensione prescritta è quella del grande trapano nella camera del Tempio, che è la dimensione del pundion italiano , o della sela neroniana , o come il buco in un giogo.
Mishnah Oholot
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.
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Mishnah Oholot
[An object] one handbreadth square and one handbreadth high conveys uncleanness and blocks uncleanness. How does it [block uncleanness]? In the case of a covered drain beneath a house, if it has a space a handbreadth wide and its outlet was a handbreadth wide, and there is uncleanness inside it, the house remains clean; And when there is uncleanness in the house, that which is within [the drain] remains clean, for the manner of the uncleanness is to go out and not to go in. If it had a space one handbreadth wide but its outlet was not one handbreadth wide, when there is uncleanness in it, the house becomes unclean; But when there is uncleanness in the house, that which is within it remains clean, for the manner of the uncleanness is to go out and not to go in. If it did not have a space one handbreadth wide and its outlet was not one handbreadth wide, when there is uncleanness within it, the house becomes unclean; And when there is uncleanness in the house, it [also] becomes unclean. It makes no difference if the cavity was carved out by water or by a sheretz or if it had been eaten out by salt. And similarly [if it is in] a row of stones or a pile of beams. Rabbi Judah says: any "tent" not made by a person is not considered a tent’. But he agrees that crevices and crags [can be considered as ‘tents’].
