Srimad Bhagavatam Canto 01, Chapter 15, Text 40

SB 1.15.40

visrjya tatra tat sarvam
dukula-valayadikam
nirmamo nirahankarah
añchinnasesa-bandhanah
 
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
 
Maharaja Yudhisthira at once relinquished all his garments, belt and ornaments of the royal order and became completely disinterested and unattached to everything.
 
Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
 
To become purified of material contamination is the necessary qualification for becoming one of the associates of the Lord. No one can become an associate of the Lord or can go back to Godhead without such purification. Maharaja Yudhisthira, therefore, to become spiritually pure, at once gave up his royal opulence, relinquishing his royal dress and garments. The kasaya, or saffron loincloth of a sannyasi, indicates freedom from all attractive material garments, and thus he changed his dress accordingly. He became disinterested in his kingdom and family and thus became free from all material contamination, or material designation. People are generally attached to various kinds of designations — the designations of family, society, country, occupation, wealth, position and many others. As long as one is attached to such designations, he is considered materially impure. The so-called leaders of men in the modern age are attached by national consciousness, but they do not know that such false consciousness is also another designation of the materially conditioned soul; one has to relinquish such designations before one can become eligible to go back to Godhead. Foolish people adore such men who die in national consciousness, but here is an example of Maharaja Yudhisthira, a royal king who prepared himself to leave this world without such national consciousness. And yet he is remembered even today because he was a great pious king, almost on the same level with the Personality of Godhead Sri Rama. And because people of the world were dominated by such pious kings, they were happy in all respects, and it was quite possible for such great emperors to rule the world.
Srimad Bhagavatam Canto 01, Chapter 15, Text 39
Srimad Bhagavatam Canto 01, Chapter 15, Text 41