Sāṃkhya Kārikā verse 23

adhyavasāyaḥ buddhiḥ dharmaḥ jñānaṃ virāga aiśvaryam |
sāttvikam-etad-rūpaṃ tāmasam-asmāt-viparyastam ||

adhyavasāya - mental effort, apprehension; determination to begin an activity with a view to get the fruitbuddhi - the intellectual faculty; comprehension; intelligence, discernment, judgementdharma - essential qualities, according to the nature of anything; highest duty; customary observance or prescribed conductjñāna - knowing; knowledge; higher knowledgesattva - clarity; the quality of purityrūpa - any outward appearance or phenomenon or colour; form, shape, figure; aggregate