Bhagavad Yana Parva is the fifty fourth upa parva included in the fifth maha parva, named as Udyoga parva. This upa parva is also called as Krishna Anusandhana parva. This is the third most popular upa parva in the Mahabharat, with the first one being Bhagavad Geetha parva and the second one being Vishnu Sahasranama of Shanthi Parva. Vaishampayana continued the narration to Janamejaya as follows.
After sending Sanjaya back to Kurukshetra from Upaplava, Yudhishtira thought, his one reliable person was always Krishna, so his next turn and task would be to beg for his help. Before starting the dice game with Shakuni, Yudhishtira had forgotten Krishna. That lapse or mistake was very serious and resulted in thirteen years of sufferings. Hence Yudhishtira thought if Krishna was consulted before telling anything to anybody, or to order before the seven Akshohini soldiers, better results would be guaranteed.
In this parva, Krishna was chosen as an ambassador of peace treaty for the side of Yudhishtira at Upaplava. At Nagasahvaya, on the same day, Duryodhana showed his egoistic nature of power in the court debate leading to the boycotting of Bhishma from his court session for that day.
Why didn’t Yudhishtira initially show interest in sending Krishna?
Yudhishtira had desired only to consult Krishna after the returning of Sanjaya to Kurukshetra. But he had not shown any interest or intention in sending him to the Palace of Duryodhana or to his court session. Yudhishtira thought Krishna would be physically hurt or insulted if sent alone to the court of Duryodhana, since for the past many years, his experience showed the negligence of Krishna by the Kauravas and their companions.