Bhagavatapurana 3.9.20

3.9.20

* //
yo 'vidyayānupahato 'pi daśārdha-vṛttyā $ nidrām uvāha jaṭharī-kṛta-loka-yātraḥ &
yo 'vidyayānupahato 'pi daśārdha-vṛttyā $ nidrām uvāha jaṭharī-kṛta-loka-yātraḥ &
antar-jale 'hi-kaśipu-sparśānukūlāṃ % bhīmormi-mālini janasya sukhaṃ vivṛṇvan //

20. O Praiseworthy One, I bow to Thee who puttest on a sleep though never assailed by Avidya of five powers, who hast withdrawn the world into Thy stomach and who, in the midst of

waters tossed with fearful waves, enjoyest the sleep to which Sesha the serpent, by his softness, like a bed, is favourable, thereby illustrating the pleasure of sleep to men (tossed in the fearful waves of Samsara), [in order to enhance the pleasure of rest for those that have been wearied by the activities of a previous Kalpa.]