Srimad Bhagavad-Gita :
Chapter-6. ( Dhyana-yogam )
Slokam- 43. ( Hey Arjuna! On taking such a birth, he again revives the divine consciousness of his previous life, and he tries to make further progress in order to achieve complete success. )
tatra tam buddhi-samyogam labhate paurva-dehikam,
yatate ca tato bhuyah samsiddhau kuru-nandana.
kuru-nandana tatra = hey Arjuna! in that janmam ( birth );
paurva-dehikam tam = gained in that previous birth;
buddhi-yogam labhate = regaining the memory of jnanam ( revival of Consciousness )
atah bhuyah = again from there onwards;
samsiddhau yatate ca = also, try hard to attain for yoga-siddhi ( endeavors, for perfection ).
Lord Krishna states the qualifications of the yogi or one perfecting the science of the individual consciousness attaining communion with the ultimate consciousness and why such a birth mentioned in the preceding verse is so rare. It is because the potent impression of one's past life yoga practices has such efficacy that one regains their spiritual insight and an awakening occurs regarding meditation on the atma or soul. It is exactly like waking up in the morning after sleeping during the night. After such an awakening a person recognises the place where they left off last life and wholeheartedly and determinedly strives for perfection in yoga in their present life without reservation.
What happens then to such a person as described in the two previous verses. Lord Krishna declares that in both types of birth the person comes into contact with the level of spiritual knowledge which one acquired in the previous life and impelled by the impressions from it strives harder then ever before to reach the perfection of moksa or liberation from material existence.
In the very next reincarnation such a practicer of yoga or the science of the individual consciousness attaining communion with the ultimate consciousness is propelled by the impressions of the previous birth and is drawn by the habits cultivated in their previous existence. Like one who while performing a task slumbers briefly but when roused from sleep enthusiastically continues onwards to finishing it. In the same way in their next birth such a practicer of yoga enthusiastically continues onwards in perfecting yoga from where they left off in the previous life. Lord Krishna is declaring that the influence of yoga and the past life habits involving yoga are so potent that they impel such a person in their next life to gravitate towards yoga instinctively and intuitively as if it were not in one's power to resist. Verily the majesty and greatness of yoga is well known to be such.
To be continued ...