Rigveda 5.2.12

तु॒वि॒ग्रीवो॑ वृष॒भो वा॑वृधा॒नो॑ऽश॒त्र्व१र्यः सम॑जाति॒ वेद॑: ।इती॒मम॒ग्निम॒मृता॑ अवोचन् ब॒र्हिष्म॑ते॒ मन॑वे॒ शर्म॑ यंसद्ध॒विष्म॑ते॒ मन॑वे॒ शर्म॑ यंसत्॥

tuvigrīvo vṛṣabho vāvṛdhāno'śatrva1ryaḥ samajāti veda: |itīmamagnimamṛtā avocan barhiṣmate manave śarma yaṃsaddhaviṣmate manave śarma yaṃsat ||

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