Amavasya also tells the story of Lord Vishnu, who in his dwarf incarnation vanquished the tyrant Bali, and banished him to hell. Bali was allowed to return to earth once a year, to light millions of lamps to dispel the darkness and ignorance, and spread the radiance of love and wisdom.
It is on the third day of Deepawali — Kartika Shudda Padyami that Bali steps out of hell and rules the earth according to the boon given by Lord Vishnu.
The fourth day is referred to as Yama Dvitiya (also called Bhai Dooj) and on this day sisters invite their brothers to their homes.
