Literature Reference: Not only is the mind always pure, but the clothes are also free from a speck of dust. Source from 'Ji Bu Chu Yuan Seng'.
常: Ordinary; common. Describing people and things that stand out, distinct from the ordinary.
净: Pristine and spotless. Extended meaning: a clean-cut gentleman, refined and well-liked.
Meaning: Ever pure, signifying a heart that remains perpetually clear and untainted by the dust of the world.