Ezekiel 4:10 (KJV)

And, behold, I will lay bands upon thee, and thou shalt not turn thee from one side to another, till thou hast ended the days of thy siege.

Take thou also unto thee wheat, and barley, and beans, and lentiles, and millet, and fitches, and put them in one vessel, and make thee bread thereof, according to the number of the days that thou shalt lie upon thy side, three hundred and ninety days shalt thou eat thereof.

And thy meat which thou shalt eat shall be by weight, twenty shekels a day: from time to time shalt thou eat it.

Thou shalt drink also water by measure, the sixth part of an hin: from time to time shalt thou drink.

And thou shalt eat it as barley cakes, and thou shalt bake it with dung that cometh out of man, in their sight.