This is the way, by which go to the highest state, the Yogis who have overcome all difficulties who are patient and self-controlled and who have their souls seated in their brains. The Prana and Apana are thus present in all creatures.
योगिनामेष मार्गस्तु येन गच्छन्ति तत् परम्। जितक्लमाः समा धीरा मूर्धन्यात्मानमादधुः। एवं सर्वेषु विततौ प्राणापानौ हि देहिषु॥