Srimad Bhagavatam Canto 04, Chapter 09, Text 14

SB 4.9.14

kalpanta etad akhilam jatharena grhnan
 sete puman sva-drg ananta-sakhas tad-anke
yan-nabhi-sindhu-ruha-kañcana-loka-padma-
 garbhe dyuman bhagavate pranato ’smi tasmai
 
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
 
My dear Lord, at the end of each millennium the Supreme Personality of Godhead Garbhodakasayi Visnu dissolves everything manifested within the universe into His belly. He lies down on the lap of Sesa Naga, from His navel sprouts a golden lotus flower on a stem, and on that lotus Lord Brahma is created. I can understand that You are the same Supreme Godhead. I therefore offer my respectful obeisances unto You.
 
Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
 
Dhruva Maharaja’s understanding of the Supreme Personality of Godhead is complete. In the Vedas it is said, yasmin vijñate sarvam evam vijñatam bhavati: knowledge received through the transcendental, causeless mercy of the Lord is so perfect that by that knowledge the devotee becomes acquainted with all the different manifestations of the Lord. Lord Ksirodakasayi Visnu was present before Dhruva Maharaja, who could also understand the Lord’s two other forms, namely Garbhodakasayi Visnu and Karanodakasayi (Maha) Visnu. Regarding Maha-Visnu, it is stated in the Brahma-samhita (5.48):
 
yasyaika-nisvasita-kalam athavalambya
 jivanti loma-vilaja jagad-anda-nathah
visnur mahan sa iha yasya kala-viseso
 govindam adi-purusam tam aham bhajami
 
At the end of each and every millennium, when all the material worlds are dissolved, everything enters the body of Garbhodakasayi Visnu, who is lying on the lap of Sesa Naga, another form of the Lord.
 
Those who are not devotees cannot understand the different forms of Visnu and their positions in regard to the creation. Sometimes the atheists argue, “How can a flower stem sprout from the navel of Garbhodakasayi Visnu?” They consider all the statements of the sastras to be stories. As a result of their inexperience in the Absolute Truth and their reluctance to accept authority, they become more and more atheistic; they cannot understand the Supreme Personality of Godhead. But a devotee like Dhruva Maharaja, by the grace of the Lord, knows all the manifestations of the Lord and their different positions. It is said that anyone who has even a little of the Lord’s grace can understand His glories; others may go on speculating on the Absolute Truth, but they will always be unable to understand the Lord. In other words, unless one comes in contact with a devotee it is not possible to understand the transcendental form or the spiritual world and its transcendental activities.
Srimad Bhagavatam Canto 04, Chapter 09, Text 13
Srimad Bhagavatam Canto 04, Chapter 09, Text 15