Vishnupurana 2.11.p3

2.11.p3

The energy of Vishnu docs not exist only in the rob of the sun but is also manifest in Brahmā, Vishnu and Kudra. At the time of creation it is Brahmā consisting of the Rig-veda in the work of preservation it is Vishnu composed of the Yajur-Veda;—and in the work of destruction it is Rudra formed of the Sāma-Veda, the utterance of which is therefore inauspicious.