Information from https://en.wikipedia.org/wiki/Nara-Narayana
Naranarayana (Sanskrit: नरनारायण, romanized: Naranārāyaṇa), also rendered Nara-Narayana, are a pair of sage-brothers in Hinduism. They are generally regarded as partial-incarnation (aṃśa-avatara) of the preserver deity Vishnu on earth. Nara-Narayana are described as the sons of Dharma and Murti.
The Hindu scripture Mahabharata identifies Arjuna with Nara, and Krishna with Narayana. The legend of Nara-Narayana is also told in the scripture Bhagavata Purana. Hindus believe that the pair dwells at Badrinath, where their most important temple stands.