इमं विवस्वते योगं प्रोक्तवानहमव्ययम्।
विवस्वान् मनवे प्राह मनुरिक्ष्वाकवेऽब्रवीत्।।4.1।।
।।4.1।।श्रीभगवान् बोले मैंने इस अविनाशी योगको सूर्यसे कहा था। फिर सूर्यने (अपने पुत्र) वैवस्वत मनुसे कहा और मनुने (अपने पुत्र) राजा इक्ष्वाकुसे कहा।
In the third chapter Lord Krishna explained that only karma yoga or the performance of prescribed Vedic activities was suitable for the materialistic person aspiring for moksa or liberation from the cycle of birth and death and that such an aspirant was not competent to follow the path of jnana yoga or the cultivation of Vedic knowledge. It was also shown that even for jnana yoga practitioners that karma yoga when performed as a matter of duty without attachment was preferable. It was further illustrated that for leaders of prominence in society it is an important necessity to perform karma yoga in order that the public is guided and inspired in a righteous manner. The objective of this fourth chapter is to further emphasise the worthiness of karma yoga by giving evidence that it was taught to great personalities at the beginning of this Manavatar or cyclic appearance of one type of divine incarnations as verified in Vedic scriptures over a period of time comprising approximately every 350 million years. Also it will be shown in this chapter how karma yoga partakes of the nature of jnana yoga by reason of spiritual intentions underlying all prescribed Vedic activities. Chapter four finishes up by explaining the nature and varieties of karma yoga and the importance of spiritual awareness connected to performing every action.