Sāṃkhya Kārikā verse 54

ūrdhvaṃ sattva-viśālaḥ tamo-viśālaḥ ca mūlataḥ sargaḥ |
madhye rajo-viśālaḥ brahmādi stamba-prayaṅtaḥ ||

ūrdhva - upwards, towards the upper part; aloof, abovesattva - clarity; the quality of puritytamas - obscuring; mental darkness, ignorance, illusion, error; deprived of the eye's light or sight; darkness, gloomca - andmūla - rootmadhya - moderatenessrajas - excitingbrahman - that which expands; the absolute, the eternal