I just watched this video today and got mesmerised: https://www.youtube.com/watch?v=q0Qw1HAVMtI&t=71s what sadhguru has stated.
A man from south India with just 3 arrows came to fight war, When krishna asks you have only 3, what can you do with it? He mentions, i can kill entire kauravas from 1 arrow and another arrow to kill entire pandavas. By the by who is this person and what is his name? Is that true story and was he a real character? What was his story?