Only Arjuna and Sanjaya could hear the Gita messages, that were said by Krishna in Kurukshetra. After that, Arjuna was involved in the war of Mahabharata. Anywhere I have never heard that Arjuna writing or dictating Bhagawad Gita after the war was over.
Is the current Gita we read/hear today, exactly same as it was uttered by Krishna?