A terrible battle ensued between Sri Krishna and Narkasura. The demon on several occasions proved a match for Krishna and nullified several of the missiles which Krishna hurled at him. On one instance, the demon hurled a shakti towards Krishna, which hurt Krishna mildly and fell unconscious(Falsely). This enraged Sathyabhama who in turn shot arrows at Narakasura and both Krishna & Sathyabhama killed him finally. Sathyabhama is the incarnation of Bhoomi Devi during Krishna avatar of Lord Vishnu and therefore the boon granted to Bhoomi Devi was fulfilled. Thereafter, Krishna obtained the stolen ear-rings of the mother of the gods, Aditi. Aditi was pleased by Satyabhama's dedication towards her husband and gave her a boon of staying young and beautiful forever. This great day is celebrated as Narak-Chaturdashi which falls in the festival of Diwali (the first important day of Diwali).