Mandala 1, Hymn 32, Verse 1
इन्द्र॑स्य॒ नु वी॒र्या॑णि॒ प्र वो॑चं॒ यानि॑ च॒कार॑ प्रथ॒मानि॑ व॒ज्री अह॒न्नहि॒मन्व॒पस्त॑तर्द॒ प्र व॒क्षणा॑ अभिन॒त्पर्व॑तानाम्
"I WILL declare the manly deeds of Indra, the first that he achieved, the Thunder-wielder. He slew the Dragon, then disclosed the waters, and cleft the channels of the mountain torrents."