My Lord, You accept the pleasure of sleeping in the water of devastation, where there are violent waves, and You enjoy pleasure on the bed of snakes, showing the happiness of Your sleep to intelligent persons. At that time, all the universal planets are stationed within Your abdomen.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
योऽविद्ययानुपहतोऽपि दशार्धवृत्त्या निद्रामुवाह जठरीकृतलोकयात्रः । अन्तर्जलेऽहिकशिपुस्पर्शानुकूलां भीमोर्मिमालिनि जनस्य सुखं विवृण्वन्
yo'vidyayānupahato'pi daśārdhavṛttyā nidrāmuvāha jaṭharīkṛtalokayātraḥ | antarjale'hikaśipusparśānukūlāṃ bhīmormimālini janasya sukhaṃ vivṛṇvan
SB 3.9.20