Vishnupurana 1.15.p1.10

1.15.p1.10

And beholding them desirous of multiplying the race, the divine ascetic Nārada approaching them addressed them with sweet words—Nārada said,—"O ye highly powerful Haryaswas, it is evident that you intend multiplying the progeny—do ye hear this: you like ignorant people, do know not the middle, the height and the depth of the world: how would you propagate progeny then? Your understanding is not hindered by interval, height or depth, why do ye not O fools, behold the end of the universe?" Parāçara said—Having heard these words they repaired to various quarters and have not returned as yet as the rivers lose themselves in the ocean (and do not come back).