Sraddhaval labhate jnanam
tat-parah samyatendriyah
jnanam labdhva param santim
acirenadhigacchati
(Text 39, Ch 4, Transcendental Knowledge)
Meaning: A faithful man who is dedicated to transcendental knowledge and who subdues his senses is eligible to achieve such knowledge, and having achieved it he quickly attains the supreme spiritual peace.