Rigveda 10.113.7

या वी॒र्या॑णि प्रथ॒मानि॒ कर्त्वा॑ महि॒त्वेभि॒र्यत॑मानौ समी॒यतु॑: ।ध्वा॒न्तं तमोऽव॑ दध्वसे ह॒त इन्द्रो॑ म॒ह्ना पू॒र्वहू॑तावपत्यत॥

yā vīryāṇi prathamāni kartvā mahitvebhiryatamānau samīyatu: |dhvāntaṃ tamo'va dadhvase hata indro mahnā pūrvahūtāvapatyata ||

Our plain-language meaning of this verse is waiting for scholar review.