इन्द्र , the formidable god of strength and slayer of enemies, is energized by the मरुत्स् to combat वृत्र [rv-10-73-1 ] rv • Book 10 . With vast strides, he conquers darkness and brings riches with the अश्विन्स् ' aid [rv-10-73-3 ] rv • Book 10 . Celebrated by the gods, Indra subjugates नमुचि and वृत्र , fills the waters, and dispels illusions, enhancing paths for humans [rv-10-73-5 ] rv • Book 10 .