yasya deve para bhaktir
yatha deve tatha gurau
tasyaite kathita hy arthah
prakasante mahatmanah
[SU 6.23]
"'Only unto those great souls who have implicit faith in both the Lord and the spiritual master are all the imports of Vedic knowledge automatically revealed.' In the Chandogya Upanishad it is said, acaryavan purusho veda: 'One who approaches a bona fide spiritual master can understand everything about spiritual realization.'"
(Srimad-Bhagavatam 4.28.65, Purport)
.
