The Religion of the Veda: The Ancient Religion of India (from Rig-Veda to Upanishads) c9.s1.12

c9.s1.12

"The terrible one of whom they ask, where is he? Nay verily they say of him, he is not at all. He makes shrink the goods of his enemy like a gambler the stakes of his opponent: Put your faith in him—He, O folks, is Indra."
(Rig-Veda 2. 12. 5.)