That Narayana is Krishna, and that Nara is Falguna (Arjuna).
Indeed, they are one Soul born in twain.
एष नारायणः कृष्णः फाल्गुनश्च नरः स्मृतः ।
नारायणो नरश्चैव सत्त्वमेकं द्विधा कृतम् ॥
महाभारत उद्योगपर्व ४९.२०
The Eternal Light
Believe nothing because a wise man said it;
Believe nothing because it is generally held;
Believe nothing because it is written;
Believe nothing because it is said to be divine;
Believe nothing because somebody else believes it;
Believe only what you yourself judge to be true
- Gautam Buddha