Srimad Bhagavatam Canto 11, Chapter 14, Text 16

SB 11.14.16

nirapeksam munim santam
 nirvairam sama-darsanam
anuvrajamy aham nityam
 puyeyety anghri-renubhih
 
Translation: 
 
With the dust of My devotees’ lotus feet I desire to purify the material worlds, which are situated within Me. Thus, I always follow the footsteps of My pure devotees, who are free from all personal desire, rapt in thought of My pastimes, peaceful, without any feelings of enmity, and of equal disposition everywhere.
 
Purport: 
 
Just as the devotees always follow the footsteps of Lord Krsna, similarly Lord Krsna, being a devotee of His devotees, follows the footsteps of His devotees. A pure servitor of the Lord is always meditating on the pastimes of the Lord and considering how to assist the Lord in His mission. All the material universes are situated in Sri Krsna’s body, as demonstrated to Arjuna, mother Yasoda and others. Lord Krsna is the Supreme Personality of Godhead, and therefore there is no question of impurity in the Lord. Still, the Lord desires to purify the universes situated within Him by taking the dust of the lotus feet of His pure devotees. Without the dust of the lotus feet of the devotees, it is not possible to engage in pure devotional service, without which one cannot directly experience transcendental bliss. Lord Krsna thought, “I have established this strict rule that one can enjoy My transcendental bliss only through devotional service obtained from the dust of the lotus feet of My devotees. Since I also desire to experience My own bliss, I will observe the standard procedure and accept the dust of My devotees’ feet.” Srila Madhvacarya points out that Lord Krsna follows the footsteps of His devotees in order to purify them. As the Lord walks along behind His pure devotees, the wind blows the dust of the Lord’s feet in the front of His devotees, who then become purified by contact with such transcendental dust. One should not foolishly look for material logic in these transcendental pastimes of the Lord. It is simply a question of love between the Lord and His devotees.
Srimad Bhagavatam Canto 11, Chapter 14, Text 15
Srimad Bhagavatam Canto 11, Chapter 14, Text 17