Rigveda 7.1.3
प्रेद्धो॑ अग्ने दीदिहि पु॒रो नोऽज॑स्रया सू॒र्म्या॑ यविष्ठ ।त्वां शश्व॑न्त॒ उप॑ यन्ति॒ वाजा॑:॥
preddho agne dīdihi puro no'jasrayā sūrmyā yaviṣṭha |tvāṃ śaśvanta upa yanti vājā: ||
Our plain-language meaning of this verse is waiting for scholar review.