Sankara is a very, very exalted mahabhagavata. He always serves Krsna and all His manifestations, like Rama, Nrsimha, Kalki and Varaha. In this world he has five kinds of manifestations: earth, water, fire, air, and ether. You cannot see other than these five. You can see water, you can see earth, you can see sky and you can see fire...