According to Osho, the great mantras were not fabricated but “heard” in states of deep meditation—utter silence, egolessness, and non-seeking. They echo the inner nada and align with our subtle centers (chakras), each bearing a specific resonance. Chanted rightly, they collect scattered mind-energy; used for power, they inflate ego; used in surrender, they harmonize centers and open the way to truth.
Mantras came when sages were totally quiet inside, and each one matches an inner energy spot to help us become peaceful—if we use them without craving power.