Yoga Rahasya Chapter Two verse 30
yayā vṛtyā prāṇavāyoḥ dairghyaṃ dine dine|
vardhete ca viniḥ bādhaṃ vṛttiṃ tām-anusaṃcaret ‖
Encompass that which promotes
the length and subtlety of the breath
as an activity to be followed everyday.
Commentaries and Reflections
Commentary by Paul Harvey:
“You have to practice in such a way that
day to day the breath gets longer and subtler.”