Rigveda 10.28.7
ए॒वा हि मां त॒वसं॑ ज॒ज्ञुरु॒ग्रं कर्म॑न्कर्म॒न्वृष॑णमिन्द्र दे॒वाः ।वधीं॑ वृ॒त्रं वज्रे॑ण मन्दसा॒नोऽप॑ व्र॒जं म॑हि॒ना दा॒शुषे॑ वम्॥
evā hi māṃ tavasaṃ jajñurugraṃ karmankarmanvṛṣaṇamindra devāḥ |vadhīṃ vṛtraṃ vajreṇa mandasāno'pa vrajaṃ mahinā dāśuṣe vam ||
Our plain-language meaning of this verse is waiting for scholar review.
Open in the book