This hymn invokes इन्द्र 's presence and blessings through a profound sacrifice characterized by intricate rituals involving multiple pairs of stones, specific prayer tones, diverse metres, and numerous vessels [rv-2-18-1 ] rv • Book 2 . It emphasizes the sacrifice's completeness for इन्द्र , providing divine benefits to humanity [rv-2-18-2 ] rv • Book 2 . Worshippers harness his divine horses with precise prayers [rv-2-18-3 ] rv • Book 2 . Various configurations of steeds signify इन्द्र 's grand arrival to partake in the sacred Soma, ensuring successful outcomes [rv-2-18-4 ] rv • Book 2 . A plea is made for lasting friendship, इन्द्र 's generosity, and perpetual protection, concluding with a request for fulfillment of desires and the prosperity of future generations [rv-2-18-7 ] rv • Book 2 .