Here is the Sanskrit anuvad, Hindi anuvad, and English translation of Atma-Samyama Yoga Chapter 6, Verse 6.3.
Sanskrit
आरुरुक्षोर्मुनेर्योगं कर्म कारणमुच्यते । योगारूढस्य तस्यैव शमः कारणमुच्यते ॥ ६.३ ॥
Hindi
योगमें आरूढ़ होनेकी इच्छावाले मननशील पुरुषके लिये योगकी प्राप्तिमें निष्कामभावसे कर्म करना ही हेतु कहा जाता है और योगारूढ़ हो जानेपर उस योगारूढ़ पुरुषका जो सर्वसंकल्पोंका अभाव है, वही कल्याणमें हेतु कहा जाता है|
English
For one who wishes to establish himself in the divinity of Yoga. O Arjuna, he must follow the method of doing Karma without desires of any sort. For, giving up all worldly thoughts is the path that will lead you to being fully and truly established in Yoga, Dear Arjuna.