582
Śrīmad-Bhāgavatam
[Canto 3, Ch. 15]
ādayaḥ —headed by Sanaka;  ceruḥ —traveled;  vihāyasā —by traveling in outer space or flying in the sky;  lokān —to the material and spiritual worlds;  lokeṣu —among the people;  vigata-spṛhāḥ —without any desire.
TRANSLATION
Lord Brahmā said: My four sons Sanaka, Sanātana, Sanandana and Sanat-kumāra, who were born from my mind, are your predecessors. Sometimes they travel throughout the material and spiritual skies without any definite desire.
PURPORT
When we speak of desire we refer to desire for material sense gratification. Saintly persons like Sanaka, Sanātana, Sanandana and Sanat-kumāra have no material desire, but sometimes they travel all over the universe out of their own accord to preach devotional service.
TEXT 13
त एकदा भगवतो वैकुण्ठस्यामलात्मनः। ययुर्वैकुण्ठनिलयं सर्वलोकनमस्कृतम् ॥१३॥
ta ekadā bhagavato vaikuṇṭhasyāmalātmanaḥ yayur vaikuṇṭha-nilayam sarva-loka-namaskṛtam
te —they;  ekadā —once upon a time;  bhagavataḥ —of the Supreme Personality of Godhead;  vaikuṇṭhasya —of Lord Viṣṇu;  amala-ātmanaḥ —being freed from all material contamination;  yayuḥ —entered;  vaikuṇṭha-nilayam —the abode named Vaikuṇṭha;  sarva-loka —by the residents of all the material planets;  namaskṛtam —worshiped.
TRANSLATION
Thus traveling all over the universes, they also entered into the spiritual sky, for they were freed from all material contamination. In the spiritual sky there are spiritual planets known as Vaikuṇṭhas, which are the residence of the Supreme Personality of Godhead and His pure devotees and are worshiped by the residents of all the material planets.
PURPORT
The material world is full of cares and anxieties. In any one of the planets, beginning from the highest down to the lowest, Pātāla, every