ear - that is, till. Asses were employed in tillage, as well as oxen (Deu 22:10).
clean - rather, salted provender [Gesenius]. The Arab proverb is, “Sweet provender is as bread to camels - salted provender as confectionery.” The very cattle shall share the coming felicity. Or else, well-fermented maslin, that is, provender formed of a mixture of various substances: grain, beans, vetches, hay, and salt.
winnowed - not as it is usually given to cattle before it is separated from the chaff; the grain shall be so abundant that it shall be given winnowed.
shovel - by which the grain was thrown up in the wind to separate it from the chaff.