Fixing the vital airs Prana, Apana Samana, Udana, and Vyana in the heart, they fixed the mind in Prana and Apana united together.
प्राणापानौ तथोदानं समानं व्यानमेव च। एवं तौ मनसि स्थाप्य दधतुः प्राणयोर्मनः॥