caturtham api vai masam

dvadase dvadase ’hani

vayu-bhakso jita-svaso

dhyayan devam adharayat

 

Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:

 

In the fourth month Dhruva Maharaja became a complete master of the breathing exercise, and thus he inhaled air only every twelfth day. In this way he became completely fixed in his position and worshiped the Supreme Personality of Godhead.