PURPORT

This is a sign of associating with great devotees. A devotee takes instructions from a liberated soul and is thus overwhelmed by ecstasy from transcendental pleasure. As stated by Prahlada Maharaja:

naisam matis tavad urukramaṅghrim
sprsaty anarthapagamo yad-arthah
mahiyasam pada-rajo 'bhisekam
niskincananam na vrnita yavat
(Bhag. 7.5.32)

One cannot become a perfect devotee of the Lord without having touched the lotus feet of a great devotee. One who has nothing to do with this material world is called niskincana. The process of self-realization and the path home, back to Godhead, means surrendering to the bona fide spiritual master and taking the dust of his lotus feet on one's head. Thus one advances on the path of transcendental realization. Vidura had this relationship with Maitreya, and he attained the results.