יחזקאל מה:יג פירוש: רש״י

a sixth of an ephah from a homer of wheat This amounts to one out of sixty. Whoever wishes to give little shall not give less than this, and this is what they said (Ter. 4:3): “A stingy person gives one out of sixty.”

and you shall separate a sixth And you shall separate a sixth of an “ephah” for the “terumah” of a “homer” of barley.