Rigveda 10.135.3

यं कु॑मार॒ नवं॒ रथ॑मच॒क्रं मन॒साकृ॑णोः ।एके॑षं वि॒श्वत॒: प्राञ्च॒मप॑श्य॒न्नधि॑ तिष्ठसि॥

yaṃ kumāra navaṃ rathamacakraṃ manasākṛṇoḥ |ekeṣaṃ viśvata: prāñcamapaśyannadhi tiṣṭhasi ||

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