8.25 Smoke, night, as also the dark fortnight and the six months of the Southern solstice-following this Path the yogi having reached the lunar light, returns.
English Translation Of Sri Shankaracharya's Sanskrit Commentary By Swami Gambirananda
8.25 Dhuman, smoke; and ratrih night, are the deities presiding over smoke and night. Similarly, krsnah, the dark fornight, means the deity of the dark fortnight. Just as before, by sanmasah daksinayanam the six months of the Southern solstice, also is verily meant a deity. Tatra, following this Path; yogi, the yogi who performs sacrifices etc., the man of actions; prapya, having reached; candramasam jyotih, the lunar light-having enjoyed the results (of his actions); nivartate, returns, on their exhaustion.
English Translation By Swami Sivananda
8.25 Attaining to the lunar light by smoke, night time, the dark fortnight also, the six months of the southern path of the sun (the southern solstice), the Yogi returns.
