Rigveda 3.30.4

त्वं हि ष्मा॑ च्या॒वय॒न्नच्यु॑ता॒न्येको॑ वृ॒त्रा चर॑सि॒ जिघ्न॑मानः ।तव॒ द्यावा॑पृथि॒वी पर्व॑ता॒सोऽनु॑ व्र॒ताय॒ निमि॑तेव तस्थुः॥

tvaṃ hi ṣmā cyāvayannacyutānyeko vṛtrā carasi jighnamānaḥ |tava dyāvāpṛthivī parvatāso'nu vratāya nimiteva tasthuḥ ||

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