Mbh 12.347.1a

"Vaisampayana said, 'Having heard these words of Nara and Narayana, the Rishi Narada became filled with devotion towards the Supreme Being. Indeed, with his whole soul he devoted himself to Narayana. Having resided for a full thousand years in the retreat of Nara and Narayana, having beheld the immutable Hari, and heard the excellent discourse having Narayana for its topic, the celestial Rishi repaired to his own retreat on the breast of Himavat. Those foremost of ascetics viz., Nara and Narayana, however continued to reside in their delightful retreat of Vadari, engaged in the practice of the severest austerities. Thou art born in the race of the Pandavas. Thou art of immeasurable energy. O perpetuator of the race of the Pandavas, having listened to this discourse on Narayana from the beginning, thou hast certainly been cleansed of all thy sins and thy soul has been sanctified. His is neither this world nor the world hereafter, O best of kings, who hates instead of loving and reverencing the immutable Hari. The ancestors of that person who hates Narayana, who is the foremost of deities, and is otherwise called Hari, sink into hell for eternity. O tiger among men, Vishnu is the soul of all beings. How, then, can Vishnu be hated, for in hating him one would hate one's own self. He who is our preceptor, viz., the Rishi Vyasa, the son of Gandhavati, has himself recited this discourse unto us on the glory of Narayana, that glory which is the highest and which is immutable. I heard it from him and have recited it to thee exactly as I heard it, O sinless one. This cult, with its mysteries and its abstract of details, was obtained by Narada, O king, from that Lord of the universe, viz., Narayana himself. Even such are the particulars of this great cult. I have, before this, O foremost of kings, explained it to thee in the Hari-Gita, with a brief reference to its ordinances.[1892] Know that the Island-born Krishna, otherwise called Vyasa, is Narayana on Earth.