One of my Siddha Guru "Annai Siddhar Rajakumar Swami" was taken in to a forest by His Guru "Sree La Sree Thalayaati Siddhar" perumaan and informed him that HE will soon leave his physical body. (Samaadhi)
Before doing so, He thought of giving a great boon not only to His close Disciple but for the entire humanity in the form of a Mantra.
HE said that "I want to give you the Sum total of all my energies, so whenever you recite that mantra Be aware that I am with you" and HE bestowed the Maha mantra to Him.
"AUM JAI GURUVAE THUNAI "