Bhagavatapurana 11.3.39

39. V. In the various bodies evolved out of eggs, the womb, vegetable seeds and sweat, the jiva enters as the supporter of life. The jiva whom life follows is unchangeable. This Jiva seems to be modified i.e., does not shine distinctly in his own true character. We Jivas have the realisation of self only when ground of phenomenal affections, does not exist. Therefore the only evidence of the existence of Atman is the memory which refers to it when one has risen from sleep.

40. When in seeking after the feet of Abjanabha and by developing intense devotion to Him, one shakes off all the impurities of the mind produced by guna and karma, in that pure mind the true nature of Atman is directly revealed just as the Sun's light is revealed to unclouded eyes.