Samkhya Karika 64

एवं तत्त्वाभ्यासान्नास्मि न मे नाहमित्यपरिशेषम् ।
अविपर्ययाद्विशुद्धं केवलमुत्पद्यते ज्ञानम् ॥ ६४ ॥

evaṁ tattvābhyāsānnāsmi na me nāhamityapariśeṣam ।
aviparyayādviśuddhaṁ kevalamutpadyate jñānam ॥ 64 ॥

evaṁ=thus; tattva=elements (25 tattvas); abhyāsāt=through study, practice; nāsmi=I am not; na=not; me=mine; na=not; aham=I; iti=thus; apariśeṣam=decisively; aviparyayāt=undisputed; viśuddhaṁ=pure; kevalam=alone, free; utpadyate=is obtained; jñānam=ultimate knowledge;

Thus, through the study of the tattvas (25 principles), the conclusive, pure, incontrovertible, the ultimate knowledge is obtained as per which one knows: “I am not”, “nothing is mine”, “not-I”.