SB 1.13.56
dhvasta-maya-gunodarko
niruddha-karanasayah
nivartitakhilahara
aste sthanur ivacalah
tasyantarayo maivabhuh
sannyastakhila-karmanah
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
He will have to suspend all the actions of the senses, even from the outside, and will have to be impervious to interactions of the senses, which are influenced by the modes of material nature. After renouncing all material duties, he must become immovably established, beyond all sources of hindrances on the path.
Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
Dhrtarastra had attained, by the yogic process, the stage of negation of all sorts of material reaction. The effects of the material modes of nature draw the victim to indefatigable desires of enjoying matter, but one can escape such false enjoyment by the yogic process. Every sense is always busy in searching for its food, and thus the conditioned soul is assaulted from all sides and has no chance to become steady in any pursuit. Maharaja Yudhisthira was advised by Narada not to disturb his uncle by attempting to bring him back home. He was now beyond the attraction of anything material. The material modes of nature (the gunas) have their different modes of activities, but above the material modes of nature is a spiritual mode, which is absolute. Nirguna means without reaction. The spiritual mode and its effect are identical; therefore the spiritual quality is distinguished from its material counterpart by the word nirguna. After complete suspension of the material modes of nature, one is admitted to the spiritual sphere, and action dictated by the spiritual modes is called devotional service, or bhakti. Bhakti is therefore nirguna attained by direct contact with the Absolute.