Srimad Bhagavad-Gita : a part epic Mahabharatham . Spread in 18 chapters and 700 slokams and situated in Bhishma-Parvam of Mahabhagavatham, chapters 25 to 42. The whole Gita is a conversation between Arjuna and Lord Krishna on various subjects, clearing all doubts. We are all Arjunas and Lord is here as our Guru, We must study this "Tattva-Sastram"and follow in our daily life. We must realise Lord within us and not in temples only.