Kesava Kasmiri's Commentary
Now Lord Krishna speaks of the path by which there is a return of rebirth
in the world of mortals. This path is the path where the manes or ancestors
are situated and wherein are stationed the demigods presiding over smoke,
night, the dark fortnight of the moon, the six months of the suns waning
southern course. The aspirant who is devoted to self aggrandising Vedic
activities for attaining the pleasures of the heavenly realms and also for
doing public welfare works like excavating drinking water and feeding the
poor to gain merit are all considered fruitive actions seeking rewards.
After death such aspirants are led by the aforementioned presiding demigods
one after another in ascending succession until they reach Svargaloka the
heavenly realms where they enjoy the rewards of their material activities
until the merits of their worldly deeds are finished, at which time they
return to the world of mortals and are born again. Here the words dhumo and
ratris meaning smoke and night respectively signify the presiding demigods
of Pitriloka the world of the manes.
The Chandogya Upanisad V.X.III-VI states: Those who perform Vedic
activities like yagna or propitiation and worship for the sake of acquiring
merit as well those doing philanthropic activities such as donating food
and land for the sake of acquiring merit, both are guided by the presiding
demigods of the smoke, then the night, then the dark moon fortnight and
then to the presiding demigod of the sun in its six months waning southern
course. These do not reach the presiding demigod of the year as they are
routed to Pitriloka and from there to space, then to the heavenly realms
where they enjoy rewards of there good deeds until their merits have shrunk
to residue and expired. Afterwards these beings return to be reborn in the
world of mortals by the same way back which they have come, from the
heavenly realms to the space and all the way down to the smoke where they
began. But to be reborn they must transition from the smoke to the mist and
from the mist to the clouds, from the clouds they transition to rain which
falls upon the ground and then transitioning they are born on Earth in the
forms of rice, barley and other grains as well as herbs and sesame plants
and various types of beans. Thus it is very difficult to evolve from this
position because only if these different flora are eaten by human or animal
and subsequently emitted as semen into the womb of a fertile female do they
become an embryo and entering material existence are able to develop
further. The Chandogya Upanisad VII.X.VII states: Accordingly those of
righteous conduct in their previous life will take birth as a human in the
family of righteous parents. Whereas those of abominable conduct in their
previous life will take birth in the abominable wombs of dogs, pigs and
unclean beings. Therefore those aspirants for moksa or liberation from
material existence should strive to realise the brahman or the spiritual
substratum pervading all existence and achieve the path which leads to the
cessation of rebirth no longer returning to the material existence as
elaborated by Lord Krishna in the previous verse.