Mbh 12.342.4d

Those amongst my worshippers, therefore, that are fully awakened (and, as such, that know that all happiness is terminable except what is attainable by persons that become identified with me) obtain what is foremost (and invaluable).[1852] Those that are awakened and whose conduct displays such enlightenment, may be engaged in adoring Brahman or Mahadeva or the other deities that occur in heaven but they succeed at least in attaining to myself. I have thus told thee, O Partha, what the distinctions are between my worshippers. Thyself, O son of Kunti, and myself are known as Nara and Narayana. Both of us have assumed human bodies only for the purpose of lightening the burden of the Earth. I am fully cognisant of self-knowledge. I know who I am and whence I am, O Bharata. I know the religion of Nivritti, and all that contributes to the prosperity of creatures. Eternal as I am, I am the one sole Refuge of all men. The waters have been called by the name of Nara, for they sprang from Him called Nara. And since the waters in former times, were my refuge, I am, therefore, called by the name of Narayana. Assuming the form of the Sun I cover the universe with my rays. And because I am the home of all creatures, therefore, am I called by the name of Vasudeva. I am the end of all creatures and their sire, O Bharata. I pervade the entire firmament on high and the Earth, O Partha, and my splendour transcends every other splendour. I am He, O Bharata, whom all creatures wish to attain to at the time of death. And because I pervade all the universe, I have come to be called by the name of Vishnu. Desirous of attaining to success through restraint of their senses, people seek to attain to me who am heaven and Earth and the firmament between the two. For this am I called by the name of Damodara. The word Prisni includes food, the Vedas, water, and nectar. These four are always in my stomach. Hence am I called by the name of Prisnigarbha.