Bhagavad Gita · 4.16

किं कर्म किमकर्मेति कवयोऽप्यत्र मोहिताः।तत्ते कर्म प्रवक्ष्यामि यज्ज्ञात्वा मोक्ष्यसेऽशुभात्॥

kiṁ karma kim akarmeti kavayo 'py atra mohitāḥ tat te karma pravakṣhyāmi yaj jñātvā mokṣhyase 'śhubhāt

What is action? What is inaction? Even the wise are confused about this. I shall teach you the truth about action, knowing which you shall be liberated from evil.

— Bhagavad Gita 4.16

Source: Sacred-Texts.com (Sanskrit) + Bhagavad-Gita.io (translations)