According to Osho, 'Jin' signifies the living realization embodied by Mahavira; after the master dies, it degenerates into 'Jain'—a hereditary, conditioned identity. 'Jain' names those repeating borrowed beliefs and mechanical rituals without personal awakening. This shift is natural: living truth becomes tradition. Only by choosing, inquiring, and verifying through one’s own experience can a person move from being a Jain to becoming a Jin.
After Mahavira, many just inherited the name and rituals; to be a real 'Jin' you must find the truth yourself, not just follow family habits.