RV 9.80.3
एन्द्रस्य कुक्षा पवते मदिन्तम ऊर्जं वसानः श्रवसे सुमङ्गलः । प्रत्यङ् स विश्वा भुवनाभि पप्रथे क्रीळन् हरिर् अत्यः स्यन्दते वृषा ॥
endrasya kukṣā pavate madintama ūrjaṃ vasānaḥ śravase sumaṅgalaḥ | pratyaṅ sa viśvā bhuvanābhi paprathe krīḷan harir atyaḥ syandate vṛṣā ||
Devanagari rendered by HREEM from the edition's roman (IAST) text; the IAST is the edition's own.
Best giver of delight, he flows to Indra's throat, robing himself in might, Auspicious One, for fame. He spreads himself abroad to meet all things that be: the vigorous Tawny Steed flows sporting on his way.
Translated by Ralph T. H. Griffith (1896)