Vishnupurana 2.9.23

2.9.23

ādhārabhūtaḥ saviturdhruvo munivarottama /
dhruvasya śiśupāro 'sau so 'pi nārāyaṇātmakaḥ //

The water which the clouds shed upon earth is in truth the ambrosia of living beings, for it gives fertility to the plants which are the support of their existence. By this all vegetables grow and are matured, and become the means of maintaining life. With them, again, those men who take the law for their light perform daily sacrifices, and through them give nourishment to the gods. And thus sacrifices, the Vedas, the font' castes, with the Brahmans at their head, all the residences of the gods, all the tribes of animals, the whole world, all are supported by the rains by which food is produced. But the rain is evolved by the sun; the sun is sustained by Dhruva; and Dhruva is supported by the celestial porpoise-shaped sphere, which is one with Náráyańa. Náráyańa, the primeval existent, and eternally enduring, seated in the heart of the stellar sphere, is the supporter of all beings.