Srimad Bhagavatam Canto 11, Chapter 13, Text 14

SB 11.13.14

etavan yoga adisto
 mac-chisyaih sanakadibhih
sarvato mana akrsya
 mayy addhavesyate yatha
 
Translation: 
 
The actual yoga system as taught by My devotees, headed by Sanaka-kumara, is simply this: Having withdrawn the mind from all other objects, one should directly and appropriately absorb it in Me.
 
Purport: 
 
The word yatha (“accordingly” or “properly”) indicates that like Uddhava one should hear directly from Lord Krsna or His bona fide representative and directly (addha) fix the mind in Lord Krsna.
Srimad Bhagavatam Canto 11, Chapter 13, Text 13
Srimad Bhagavatam Canto 11, Chapter 13, Text 15