Answer:
A harvest sown and reaped on the same day in an unplowed field. Which increases without growing, remains whole though it is eaten within and without. Is useless and yet the staple of nations.
A serpent swam in a silver urn, A golden bird did in its mouth abide, The serpent drank the water, this in turn, Killed the serpent. Then the gold bird died.
You throw away the outside, eat the inside, then throw away the inside. What is it?
Man walks over, and man swims under. In times of war, it can be burned asunder. What is it?
I cut through evil like a double edged sword, and chaos flees at my approach. Balance I single-handedly upraise, through battles fought with heart and mind, instead of with my gaze.
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?