To prove that Karma Yoga (unattached action) actually works, Krishna provides a historical precedent. He points to legendary philosopher-kings like Janaka (janakādayaḥ), who attained absolute spiritual perfection (saṃsiddhim āsthitā) purely through the execution of their worldly duties (karmaṇaiva hi). Furthermore, Krishna introduces a new, massive motivation for action: 'Loka-saṅgraham'. Even if Arjuna feels he doesn't need to work for his own purification, he must still perform his duty simply for the sake of holding the world together and guiding the masses by example (loka-saṅgraham evāpi sampaśyan).