Rigveda 2.23.18

तव॑ श्रि॒ये व्य॑जिहीत॒ पर्व॑तो॒ गवां॑ गो॒त्रमु॒दसृ॑जो॒ यद॑ङ्गिरः ।इन्द्रे॑ण यु॒जा तम॑सा॒ परी॑वृतं॒ बृह॑स्पते॒ निर॒पामौ॑ब्जो अर्ण॒वम्॥

tava śriye vyajihīta parvato gavāṃ gotramudasṛjo yadaṅgiraḥ |indreṇa yujā tamasā parīvṛtaṃ bṛhaspate nirapāmaubjo arṇavam ||

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