Rigveda 8.101.5
प्र मि॒त्राय॒ प्रार्य॒म्णे स॑च॒थ्य॑मृतावसो ।व॒रू॒थ्यं१ वरु॑णे॒ छन्द्यं॒ वच॑: स्तो॒त्रं राज॑सु गायत॥
pra mitrāya prāryamṇe sacathyamṛtāvaso |varūthyaṃ1 varuṇe chandyaṃ vaca: stotraṃ rājasu gāyata ||
Our plain-language meaning of this verse is waiting for scholar review.