Rigveda 1.162.5
होता॑ध्व॒र्युराव॑या अग्निमि॒न्धो ग्रा॑वग्रा॒भ उ॒त शंस्ता॒ सुवि॑प्रः ।तेन॑ य॒ज्ञेन॒ स्व॑रंकृतेन॒ स्वि॑ष्टेन व॒क्षणा॒ आ पृ॑णध्वम्॥
hotādhvaryurāvayā agnimindho grāvagrābha uta śaṃstā suvipraḥ |tena yajñena svaraṃkṛtena sviṣṭena vakṣaṇā ā pṛṇadhvam ||
Our plain-language meaning of this verse is waiting for scholar review.
Open in the book