Sāṃkhya Kārikā verse 64

evaṃ tattvābhyāsāt na asmi na me na aham iti apariśeṣam |
aviparyayāt viśuddhaṃ kevalam utpadyate jñānam ||

eva - indeed, truly, really; thus; so, just so, exactly sotattva - principle; thatnessabhyāsa - practice; the effort of the mind to remain in its unmodified condition of purity ; repeated or permanent exercise, discipline, use, habit, custom;aham - I; I amiti - thus; in this manner; something that has been said or thought; having so said; (it is used like a quotation mark)viśuddhi - special puritykevala - alone, only, merely, solely, excluding othersutpannā - arisesjñāna - knowing; knowledge; higher knowledge