Sāṃkhya Kārikā verse 13

sattvaṃ laghu prakāśakam-iṣṭam-upaṣṭambhakaṃ calaṃ ca rajaḥ |
guru varaṇakam-eva tamaḥ pradīpavat-ca-arthataḥ vṛttiḥ ||

sattva - clarity; the quality of transparency or purity; luminous; honesty; the quality of goodness; material or elementary substance, entity, matter; nature, disposition of mind; being, existence, entity, realitylaghu - lightness; light in the stomach, easily digested; well, in good health; light, easy, not heavy or difficultprakāśa - clearness, brightness, splendour, lustre, light; visible, shining, brightiṣṭa - wished, desired; liked, beloved; chosenupaṣṭambhaka - strengthening; stimulation; excitingcala - agitation. disturbed, unsteadyca - andrajas - excitingguru - heavy, weighty; a teacher, preceptor; a spiritual parent or preceptor; any venerable or respectable personvaraṇaka - covering, covering over, concealingeva - indeed, truly, really; thus; so, just so, exactly sotamas - obscuring; mental darkness, ignorance, illusion, error; deprived of the eye's light or sight; darkness, gloompradīpavat - like a lamparthatā - objectsvṛtti - fluctuation; modification; turning; set in motion, course of action, behaviour, movement; activity, function; profession, mode of life or conduct, course of action, behaviour