Murdanev or Murdanav was the son of Nadijangh Irritated by the sound of panchjanya, murdanav declared war on the gods and started fighting them. The gods started running in ten directions scared of him. Lord Shree Narayan fought for a thousand years with the demon with the powerful sudarshan chakra but lost and went to badrikashram and went into the cave called sinhavati to sleep. Lord Narayan was in yoganindra putting all the eleven senses in front of him. Murdanav went to that cave looking for Narayan in total rage. At that time a beautiful lady appeared out of the eleven senses of lord Shree Hari. http://www.swaminarayansatsang.com/library/articles/articledetails.asp?Articleid=3