तत्रैकाग्रं मनः कृत्वा यतचित्तेन्द्रियक्रियः।
।।6.12।। वहाँ (आसन में बैठकर) मन को एकाग्र करके चित्त और इन्द्रियों की क्रियाओं को वश में किये हुये आत्मशुद्धि के लिए योग का अभ्यास करे।।
Lord Krishna begins with the words sucau dese means pure or sanctified place. Purity is to be found in nature due to its being unoccupied and unfrequented by unclean and contaminated persons. The word sthiram means firm infers the asana or seat should not be overly soft neither should it be so high that one may fall from it nor too low as in a hole. One should by all means have a mat of kusa grass which is sacred in Vishnu tattva and then should be covered by a deerskin which deters poisonous pests like snakes and scorpions from approaching one while in concentrated meditation. On top should be placed a wool or cotton cloth. Such a seat should be aesthetic to look at and inviting. Sitting upon such a seat one should one should withdraw the senses and freeing the mind from all external distractions one should focus the mind exclusively upon the atma or soul within until upon its realisation one is freed from samsara or the endless cycle of birth and death. By every means realise the atma.