It was by fasts that the celestials have succeeded in becoming dwellers of Heaven. It is by fasts that the Rishis have acquired high success.
उपोष्य विधिवद् देवास्त्रिदिवै प्रतिपेदिरे। ऋषयश्च परां सिद्धिमुपवासैरवाप्नुवन्॥