Sama Veda, Chandogya Upanishad III, 1 - The Honey-Doctrine (Rig-Veda), 2-3

 The eastern rays of the sun are the eastern honey-cells. The Rik-verses are the bees. The ritual laid down in the Rig-Veda is the flower. The water of the sacrificial libations is the nectar of the flower. These Riks heated the Rig-Veda. From it, thus heated, issued forth-as its essence-fame, radiance of the body, vigour of the senses, virility and the food that is eaten.