Bhagavad Gita 6.3

आरुरुक्षोर्मुनेर्योगं कर्म कारणमुच्यते |
योगारूढस्य तस्यैव शम: कारणमुच्यते

Translation

To the soul who is aspiring for perfection in Yog, work without attachment is said to be the means; to the sage who is already elevated in Yog, tranquility in meditation is said to be the means.