Srimad Bhagavatam Canto 06, Chapter 17, Text 31

SB 6.17.31

vasudeve bhagavati
 bhaktim udvahatam nrnam
 na hi kascid vyapasrayah
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
Persons engaged in devotional service to Lord Vasudeva, Krsna, have naturally perfect knowledge and detachment from this material world. Therefore such devotees are not interested in the so-called happiness or so-called distress of this world.
Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
Here is the distinction between a devotee and a philosopher who speculates on the subject matter of transcendence. A devotee does not need to cultivate knowledge to understand the falsity or temporary existence of this material world. Because of his unalloyed devotion to Vasudeva, this knowledge and detachment are automatically manifested in his person. As confirmed elsewhere in Srimad-Bhagavatam (1.2.7):
vasudeve bhagavati
 bhakti-yogah prayojitah
janayaty asu vairagyam
 jñanam ca yad ahaitukam
One who engages in unalloyed devotional service to Vasudeva, Krsna, automatically becomes aware of this material world, and therefore he is naturally detached. This detachment is possible because of his high standard of knowledge. The speculative philosopher tries to understand that this material world is false by cultivating knowledge, but this understanding is automatically manifested in the person of a devotee, without separate endeavor. The Mayavadi philosophers may be very proud of their so-called knowledge, but because they do not understand Vasudeva (vasudevah sarvam iti), they do not understand the world of duality, which is a manifestation of Vasudeva’s external energy. Therefore, unless the so-called jñanis take shelter of Vasudeva, their speculative knowledge is imperfect. Ye ’nye ’ravindaksa vimukta-maninah. They simply think of becoming free from the contamination of the material world, but because they do not take shelter at the lotus feet of Vasudeva, their knowledge is impure. When they actually become pure, they surrender to the lotus feet of Vasudeva. Therefore, the Absolute Truth is easier to understand for a devotee than for jñanis who simply speculate to understand Vasudeva. Lord Siva confirms this statement in the following verse.
Srimad Bhagavatam Canto 06, Chapter 17, Text 30
Srimad Bhagavatam Canto 06, Chapter 17, Text 32