Rigveda 3.39.3

य॒मा चि॒दत्र॑ यम॒सूर॑सूत जि॒ह्वाया॒ अग्रं॒ पत॒दा ह्यस्था॑त् ।वपूं॑षि जा॒ता मि॑थु॒ना स॑चेते तमो॒हना॒ तपु॑षो बु॒ध्न एता॑॥

yamā cidatra yamasūrasūta jihvāyā agraṃ patadā hyasthāt |vapūṃṣi jātā mithunā sacete tamohanā tapuṣo budhna etā ||

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