The skilled ऋभुस् constructed chariots for the अश्विन्स् , empowered इन्द्र 's horses, rejuvenated their parents, and reunited a calf with its mother [rv-1-111-1 ] rv • Book 1 . They call for offerings that ensure prosperity and strong progeny [rv-1-111-2 ] rv • Book 1 . Desiring victory, they seek the aid of इन्द्र , वाजस् , मरुत्स् , मित्र , वरुण , and the अश्विन्स् for opulence and protection [rv-1-111-3 ] rv • Book 1 .