In this verse, Krishna describes the 'Pitrayana' or the path of smoke, which represents the trajectory of those whose spiritual practice is mixed with material desires or ritualistic merit. The imagery of smoke, night, and the southern course of the sun symbolically depicts a realm of consciousness characterized by obscurity, sensory attachment, and the waning of spiritual light. It is not a place of final liberation, but a temporary state of celestial existence where the soul enjoys the fruits of its past pious deeds in the subtle realm of the moon, which reflects the light of the divine rather than possessing it intrinsically. From an Advaitic perspective, this path represents the journey of the conditioned soul—one still identified with the subtle body and the ego—who seeks heaven rather than self-realization. Krishna introduces this to illustrate that as long as there is 'desire' (kama) for the fruits of action, the soul is subject to the law of return. It serves as a profound warning that even spiritualized actions, if performed with a limited horizon of worldly enjoyment, keep the cycle of samsara revolving. This path is ultimately a distraction for the seeker who aspires for the eternal, unconditioned Brahman, reminding us that true transcendence requires a total detachment from the fruits of action, whether celestial or terrestrial.

The path of 'Pitrayana' represents a state of temporary celestial fulfillment where the soul, clinging to the remnants of worldly desire, eventually returns to the cycle of rebirth once its merit is exhausted.