Skandham-5. Chapter-1. Slokam-21.

Lord Brahma was then worshiped by Manu, who respectfully satisfied him as
well as he could. Priyavrata and Närada also looked upon Brahmä with no
tinges of resentment. Having engaged Priyavrata in accepting his father's
request, Lord Brahmä returned to his abode, Satyaloka, which is indescribable
by the endeavor of mundane mind or words.

Manu was certainly very satisfied that Lord Brahmä had persuaded his son
Priyavrata to take the responsibility for ruling the world. Priyavrata and
Närada were also very satisfied. Although Brahma had forced Priyavrata to
accept the management of worldly affairs, thus breaking his vow to remain
brahmacari and completely engage in devotional service, Narada and
Priyavrata did not look upon Brahmä with resentment. Narada was not at all
sorry that he had been frustrated in making Priyavrata a disciple. Both
Priyavrata and Narada were exalted personalities who knew how to respect
Lord Brahma. Therefore instead of looking upon Brahmä with resentment,
they very feelingly offered him their respect. Lord Brahmä then returned to
his celestial abode, known as Satyaloka, which is described here as being
impeccable and being unapproachable by words.

It is stated in this verse that Lord Brahmä returned to his residence, which
is as important as his own personality. Lord Brahma is the creator of this
universe and the most exalted personality within it. His lifetime is described in
Bhagavad-geeta  (8.17). Sahasra-yuga-paryantam ahar yad brahmano viduh. The
total duration of the four yugas is 4,300,000 years, and when that is multiplied
a thousand times, it equals twelve hours in the life of Brahma. Therefore we
cannot factually comprehend even twelve hours of Brahma's life, to say
nothing of the one hundred years that constitute his entire lifetime. How,
then, can we understand his abode? The Vedic literatures describe that in
Satyaloka there is no birth, death, old age or disease. In other words, since
Satyaloka is situated next to Brahmaloka, or the Brahman effulgence, it is
almost as good as Vaikundaloka. Lord Brahma's abode is practically
indescribable from our present status. Therefore it has been described as
avan-manasa-gocara, or beyond the description of our words and the
imagination of our minds. The Vedic literatures thus describe the abode of
Lord Brahma: yad vai parardhyam tad uparamesthyam na yatra soko na  jara  na
mrtyur nartir na codvegah "In Satyaloka, which is situated many millions and
billions of years away, there is no lamentation, nor is there old age, death,
anxiety or the influence of enemies."