(6) Bhagavad Gita
Answer:

The most important part of the Mahabharata is the Bhagavad-Gita. It is a marvelous dialogue between Lord Krishna and Arjuna on the battlefield, before the commencement of the Great War. Bhagavan Sri Krishna became the charioteer of Arjuna. Sri krishna explained the essentials of Hindu religion to Arjuna. Just as the Upanishads contain the cream of the Vedas, so does the Gita contain the cream of the Upanishads. The Upanishads are the cows. Lord Krishna is the cowherd. Arjuna is the calf. The Gita is the milk. The wise men are those who drink the milk of Gita.

The Gita is the most precious jewel of Hindu literature. It is a universal gospel. The Gita teaches the Yoga of Synthesis. It ranks high in the religious literature of the world.

Arjuna saw before him his dear relatives and teachers in the battlefield. He fainted and refused to fight against them. Then Lord Krishna imparted knowledge of the Self to Arjuna and convinced him that it was his duty to fight regardless of the consequences. Afterwards Arjuna gave up his Moha, or delusion. All his doubts were cleared. He fought against the Kauravas and achieved victory.