JAPJI SAHIB - 33rd PAURI
By Guru Nanak

"A Pran Sutra is a mantra or phrase from the
Siri Guru Granth Sahib with which one resonates as spiritual guidance."

From the Siri Guru Granth Sahib 

Translation
No power to speak, no power to keep silent. No power to beg,
no power to give. No power to live, no power to die. No power
to rule with wealth and occult mental powers. No power to gain
intuitive understanding. No power to contemplate spiritual wisdom.
No power to find the way to escape from the world. He alone
has the Power in His hands, He watches over all.
O Nanak, no one is high or low.

"This pauree destroys your ego and brings home your divinity.
It removes negativity, neutralizes your destructive nature
and prevents harm to others by your hand."