Sama Veda II.7.2.4: O King, the potent and terrific envoy, kindled

1. O King, the potent and terrific envoy, kindled for strength, is
manifest in beauty.
He shines, observant, with his lofty splendour; chasing black night he comes with white-rayed morning.

2. Having o'ercome the glimmering Black with beauty, and bringing forth the Dame, the great Sire's daughter,
Holding aloft the radiant lights of Surya, as messenger of heaven he shines with treasures.

3. Attendant on the blessed Dame the blessed hath come: the lover followeth his sister.
Agni, far-spreading with conspicuous lustre, hath covered night with whitely-shining garments.