Rigveda 10.168.3

अ॒न्तरि॑क्षे प॒थिभि॒रीय॑मानो॒ न नि वि॑शते कत॒मच्च॒नाह॑: ।अ॒पां सखा॑ प्रथम॒जा ऋ॒तावा॒ क्व॑ स्विज्जा॒तः कुत॒ आ ब॑भूव॥

antarikṣe pathibhirīyamāno na ni viśate katamaccanāha: |apāṃ sakhā prathamajā ṛtāvā kva svijjātaḥ kuta ā babhūva ||

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