Rigveda 9.83.2

तपो॑ष्प॒वित्रं॒ वित॑तं दि॒वस्प॒दे शोच॑न्तो अस्य॒ तन्त॑वो॒ व्य॑स्थिरन् ।अव॑न्त्यस्य पवी॒तार॑मा॒शवो॑ दि॒वस्पृ॒ष्ठमधि॑ तिष्ठन्ति॒ चेत॑सा॥

tapoṣpavitraṃ vitataṃ divaspade śocanto asya tantavo vyasthiran |avantyasya pavītāramāśavo divaspṛṣṭhamadhi tiṣṭhanti cetasā ||

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