Smoke, night, the dark fortnight, and the six months of the sun's southern course: departing in these, the yogi reaches the moon's light and returns.
Explanation
Krishna continues describing the two paths a soul may take at death. This is the second path, marked by smoke, night, the waning moon and the sun's southward half of the year (dakṣiṇāyana). Those who take it reach the moon's realm and then return to rebirth. Some traditions read these terms as deities presiding over stages of the journey, others as times of death; the verse itself does not settle this.