There are numerous folk stories associated with Vishnu. The story,
which indicates that night falls when Vishnu closes his right eye, is found in
a collection of folk stories titled Gatha Saptashati. The collection belongs to
the first or second century AD.
While making love to Hari in inverted posture, Viparita
Rati, Goddess Lakshmi suddenly noticed the presence of Lord Brahma. Lord Brahma
was sitting on the lotus, which sprouted from the navel of Lord Vishnu.
Goddess Lakshmi was embarrassed and she closed the right eye
of Lord Vishnu.
Suddenly night fell and at the fall of night, the petals of
lotus flower closed engulfing Lord Brahma in them. This obliterated the presence
of Lord Brahma.