Sanjaya said: Thus I heard this conversation between Vasudeva and the great Arjuna that is so glorious that my hairs stand on end.
Bhagavad Gita - Chapter 18 - Moksha Yoga - The Yoga of Supreme Perfection
By the grace of Vyasa, I have heard this most confidential secret concerning the topmost system of yoga spoken by Shri Krishna, the Master of all yoga.
O Emperor, continuously remembering this most profound conversation between Shri Krishna, the killer of the Keshi demon, and Arjuna, I rejoice again and again. When I remember the beautiful form of the Supreme Person, Shri Krishna I am struck with wonder.
Where there is Shri Krishna, the Master of yoga, and where there is Arjuna, the mighty archer, there will always be prosperity, victory, opulence and righteousness – this is my firm conviction.