Here is the Sanskrit anuvad, Hindi anuvad, and English translation of Karma Yoga Chapter 3, Verse 3.4.
न कर्मणामनारम्भान्नैष्कर्म्यं पुरुषोऽश्नुते । न च संन्यसनादेव सिद्धिं समधिगच्छति ॥ ३.४ ॥
मनुष्य न तो कर्मोंका आरम्भ किये बिना निष्कर्मताको यानी योगनिष्ठाको प्राप्त होता है और न कर्मोंके केवल त्यागमात्र सिद्धि यानी सांख्यनिष्ठाको ही प्राप्त होता है|
O Arjuna, it is not only important to understand the meanings of Sankhyayoga and Karmayoga, but it is also important to understand the aims or goals behind each of these courses of action.The aim of Karmayoga is to achieve freedom from action. One cannot achieve the goal by total inaction or by not performing any action at all. The goal of Sankhyayoga is the realization of God. When one has fully realized God, he has reached a state of perfection. Once simply cannot attain this state of perfection by giving up or retreating from the performance of one’s actions.