A tree full of fishes.

Kabir is known for his up-side-down metaphors. He creates images out of opposites. So in one of his songs he speaks of a tree which is full of fishes. Fishes are meant to be in the waters, and are not like birds that live in trees. But in a sense a tree is like a river flowing upwards to the heavens. The sap which flows through the branches of the tree, is like a stream of life that instead of flowing downwards, defies gravity, and reaches for the skies. We are even led to believe that birds were originally fish that developed wings, whose scales turned into feathers. So what is below will come up, and this in fact is the basic principle underlying Kundaleeni Yoga, where the energy that lies at the base of the spine, slowly is lifted up, transforming the whole body.