Vishnupurana 2.11.16

2.11.16

stuvanti cainaṃ munayo gandharvair gīyate puraḥ /
nṛtyantyo 'psaraso yānti tasya cānu niśācarāḥ //

Thus the energy of Vishńu, made up of the three Vedas, and derived from the property of goodness, presides in the sun, along with the seven beings belonging to it; and through the presence of this power the planet shines with intense radiance, dispersing with his beams the darkness that spreads over the whole world: and hence the Munis praise him, the quiristers and nymphs of heaven sing and dance before him, and fierce spirits and holy sages attend upon his path. Vishńu, in the form of his active energy, never either rises or sets, and is at once the. sevenfold sun and distinct from it. In the same manner as a man approaching a mirror, placed upon a stand, beholds in it his own image, so the energy (or reflection) of Vishńu is never disjoined (from the sun's car, which is the stand of the mirror), but remains month by month in the sun (as in the mirror), which is there stationed.