Mantra for Pranayama
Om pranasyedam vashe sarvam
Tridive yath pratiptitam
Matheva putran rakshasva
Shreescha pranjnaascha videhi na ithi
Om shantih shantih shantihi
Prana the vital force pervades all the three worlds (below the earth, the earth and above the earth)
All the activities are directed by prana
To that very prana we request to protect us as a mother protects her children.
We also request the prana to simulate our intellect.