Narashima, a giant lion-man, is the fourth incarnation of Vishnu.
It was said that king Hiranyakashipu, Hiranyaksha's elder brother, obtained a boon by Brahma:
to not die either by man or beast, by day or by night, indoors or outdoors, on earth or in
the sky. The asura, being aware of own immortality, conquerd heaven and earth, and
there were no limits to Hiranyakashipu's impudence; he subjected his son Prahlada,
Vishnu's fervent worshipper, to a long and cruel persecution. At last one day,
when the asura was going to slay Prahlada, Vishnu emerged from a pillar in the form
of Narashima (man-lion) to protect his devotee. When Narashima (neither man nor beast) seized the asura,
it was the twlight (neither day nor night), he carried the him under the arch of the doorway
(neither indoors nor outdoors), where he threw the asura on his thighs (neither on earth
nor in the sky), and killed him with his claws.