Goodness, darkness, and ignorance are the qualities of the Understanding. The understanding is the attribute of the individual soul living within the body. The individual soul, in its turn, emanates froin the Supreme Soul.
तमो रजश्च सत्त्वं च विद्धि जीवगुणात्मकम्। जीवमात्मगुणं विद्यादात्मानं परमात्मनः॥