The word asur is derived from ‘असुषुरमन्तेइतिअसुर:|’, meaning ‘the one who remains engrossed only in enjoying life and in the indulgence of pleasure of the objects is an asur (demon)’. Such a Mahishasur is present in each human heart. And he has taken control over internal Divine qualities of the human being. It is necessary to perform puja of Shakti to become free from the trap of Mahishasur, by realising the illusory form of this Mahishasur. Therefore, Shakti should be worshipped in the nine days of Navratra. This victory is celebrated on the day of Dashami and is called Dussehra.