Mishnah for Oholot 2:10

And sometimes they stated a large measure:A ladleful of corpse mould refers to the big ladle of physicians; The split bean in the case of skin disease refers to the Cilician kind; One who eats on Yom Kippur a quantity of the bulk of a large date, refers to the size of the date and its pit; In the case of skins of wine and oil [the holes] must be as big as their large stopper; In the case of a light hole that was not made by man's hands the prescribed size of which is that of a large fist, the reference is to the fist of Ben Batiah Rabbi Yose said: and it is as big as a large human head. And in the case of one made by human hands the prescribed size is that of the large drill in the Temple chamber which is the size of the Italian pondium or the Neronian sela or like the hole in a yoke.