Bhagavad Gita 4.16

किं कर्म किमकर्मेति कवयोऽप्यत्र मोहिता: |
तत्ते कर्म प्रवक्ष्यामि यज्ज्ञात्व मोक्ष्यसेऽशुभात्

Translation

What is action and what is inaction? Even the wise are confused in determining this. Now I shall explain to you the secret of action, by knowing which, you may free yourself from material bondage.