Rigveda 10.111.6

वज्रे॑ण॒ हि वृ॑त्र॒हा वृ॒त्रमस्त॒रदे॑वस्य॒ शूशु॑वानस्य मा॒याः ।वि धृ॑ष्णो॒ अत्र॑ धृष॒ता ज॑घ॒न्थाऽथा॑भवो मघवन्बा॒ह्वो॑जाः॥

vajreṇa hi vṛtrahā vṛtramastaradevasya śūśuvānasya māyāḥ |vi dhṛṣṇo atra dhṛṣatā jaghanthā'thābhavo maghavanbāhvojāḥ ||

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