Yoga Sūtra Chapter Two verse 28

योगाङ्गानुष्ठानादशुद्धिक्षये ज्ञानदीप्तिराविवेकख्यातेः ॥२८॥

yoga-aṅga-anuṣṭhānāt aśuddhi-kṣaye jñāna-dīptiḥ āviveka-khyāteḥ ||28||

From performance of the limbs of Yoga the impurities diminish
and knowing illuminates up to recognition of discrimination.

yoga - the act of yokingaṅga - a limb; the bodyanuṣṭhāna - doing; performance; practice; execution; to live with and put the teachings into practiceaśuddhi - impuritykṣaya - diminish, wasting or wearing awayjñāna - knowing; knowledge; higher knowledgedīpti - illuminatesviveka - discrimination, discernment; the faculty of distinguishing and classifying things according to their real properties; the power of separating the invisible Spirit from the visible world (or spirit from matter); truth from untruthkhyāti - recognition; perception, knowledge

Commentaries and Reflections

Commentary by TKV Desikachar:

“Aṅgānuṣṭhānāt – Commitment
Irrespective of failures and testing times you will not leave it.”

“For Anuṣṭhānāt to become and remain important there needs to be Śraddhā.”