tena kramanusiddhena
pranayamaih sanniruddha-
sad-vargas chinna-bandhanah
tenathus by practicing such austerities; kramagradually; anuconstantly; siddhenaby perfection; dhvastasmashed; karmafruitive activities; maladirty things; asayahdesire; prana-ayamaihby practice of pranayama-yoga, breathing exercises; sanbeing; niruddhastopped; sat-vargahthe mind and the senses; chinna-bandhanahcompletely cut off from all bondage.
By thus practicing severe austerities, Maharaja Prthu gradually became steadfast in spiritual life and completely free of all desires for fruitive activities. He also practiced breathing exercises to control his mind and senses, and by such control he became completely free from all desires for fruitive activity.
The word pranayamaih is very important in this verse because the hatha-yogis and astanga-yogis practice pranayama, but generally they do not know the purpose behind it. The purpose of pranayama, or mystic yoga, is to stop the mind and senses from engaging in fruitive activities. The so-called yogis who practice in Western countries have no idea of this. The aim of pranayama is not to make the body strong and fit for working hard. The aim is worship of Krsna. In the previous verse it was specifically mentioned that whatever austerity, pranayama and mystic yoga practices Prthu Maharaja performed were performed for the sake of worshiping Krsna. Thus Prthu Maharaja serves as a perfect example for yogis also. Whatever he did, he did to please the Supreme Personality of Godhead, Krsna.
The minds of those who are addicted to fruitive activity are always filled with unclean desires. Fruitive activities are symptomatic of our polluted desire to dominate material nature. As long as one continues to be subject to polluted desires, he has to accept one material body after another. So-called yogis, without knowledge of the real purpose of yoga, practice it in order to keep the body fit. Thus they engage themselves in fruitive activities, and thus they are bound by desire to accept another body. They are not aware that the ultimate goal of life is to approach Krsna. In order to save such yogis from wandering throughout the different species of life, the sastras warn that in this age such yogic practice is simply a waste of time. The only means of elevation is the chanting of the Hare Krsna maha-mantra.
King Prthus activities took place in Satya-yuga, and in this age this practice of yoga is misunderstood by fallen souls who are not capable of practicing anything. Consequently the sastras enjoin: kalau nasty eva nasty eva nasty eva gatir anyatha. The conclusion is that unless the karmis, jnanis and yogis come to the point of devotional service to Lord Krsna, their so-called austerities and yoga have no value. Naradhitah: if Hari, the Supreme Personality of Godhead, is not worshiped, there is no point in practicing meditational yoga, performing karma-yoga or culturing empiric knowledge. As far as pranayama is concerned, chanting of the holy name of the Lord and dancing in ecstasy are also considered pranayama. In a previous verse, Sanat-kumara instructed Maharaja Prthu to engage constantly in the service of the Supreme Lord, Vasudeva:
Only by worshiping Vasudeva can one become free from the desires of fruitive activities. Outside of worshiping Vasudeva, the yogis and jnanis cannot attain freedom from such desires.
tadvan na rikta-matayo yatayo pi ruddha-
sroto-ganas tam aranam bhaja vasudevam
(Bhag. 4.22.39)
Here the word pranayama does not refer to any ulterior motive. The actual aim is to strengthen the mind and senses in order to engage them in devotional service. In the present age this determination can be very easily acquired simply by chanting the holy namesHare Krsna, Hare Krsna, Krsna Krsna, Hare Hare/ Hare Rama, Hare Rama, Rama Rama, Hare Hare.

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