Rigveda 3.31.15

महि॒ क्षेत्रं॑ पु॒रु श्च॒न्द्रं वि॑वि॒द्वानादित् सखि॑भ्यश्च॒रथं॒ समै॑रत् ।इन्द्रो॒ नृभि॑रजन॒द् दीद्या॑नः सा॒कं सूर्य॑मु॒षसं॑ गा॒तुम॒ग्निम्॥

mahi kṣetraṃ puru ścandraṃ vividvānādit sakhibhyaścarathaṃ samairat |indro nṛbhirajanad dīdyānaḥ sākaṃ sūryamuṣasaṃ gātumagnim ||

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