Rigveda 10.10.9

रात्री॑भिरस्मा॒ अह॑भिर्दशस्ये॒त्सूर्य॑स्य॒ चक्षु॒र्मुहु॒रुन्मि॑मीयात् ।दि॒वा पृ॑थि॒व्या मि॑थु॒ना सब॑न्धू य॒मीर्य॒मस्य॑ बिभृया॒दजा॑मि॥

rātrībhirasmā ahabhirdaśasyetsūryasya cakṣurmuhurunmimīyāt |divā pṛthivyā mithunā sabandhū yamīryamasya bibhṛyādajāmi ||

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