Spotless Mirror

The pure heart is spotless mirror in which images of infinite beauty are reflected.
Moses, that perfect saint, reflected in the mirror of his heart the infinite form of the One who is formless; the image of the One who is unseen.
This form cannot be contained in heaven, nor in the ocean, nor in the universe. All these have limits but the mirror of the heart has no limit.

Mevlana Jelaluddin Rumi, The Masnawi, vol.I 3485