Rigveda 1.50.10

उद्व॒यं तम॑स॒स्परि॒ ज्योति॒ष्पश्य॑न्त॒ उत्त॑रम् ।दे॒वं दे॑व॒त्रा सूर्य॒मग॑न्म॒ ज्योति॑रुत्त॒मम्॥

udvayaṃ tamasaspari jyotiṣpaśyanta uttaram |devaṃ devatrā sūryamaganma jyotiruttamam ||

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