One verse

Srimad Bhagavatam 4.8.53

4.8.53

जपश्च परमो गुह्य: श्रूयतां मे नृपात्मज । यं सप्तरात्रं प्रपठन्पुमान् पश्यति खेचरान् ॥ ५३ ॥

japas ca paramo guhyah sruyatam me nrpatmaja yam sapta-ratram prapathan puman pasyati khecaran

japah ca
the chanting mantra in this connection
paramah
very, very
guhyah
confidential
sruyatam
please hear
me
from me
nrpa-atmaja
O son of the King
yam
which
sapta-ratram
seven nights
prapathan
chanting
puman
a person
pasyati
can see
khe-caran
human beings who travel in space.

O son of the King, now I shall speak unto you the mantra which is to be chanted with this process of meditation. One who carefully chants this mantra for seven nights can see the perfect human beings flying in the sky.