Rigveda 5.56.6

यु॒ङ्ग्ध्वं ह्यरु॑षी॒ रथे॑ यु॒ङ्ग्ध्वं रथे॑षु रो॒हित॑: ।यु॒ङ्ग्ध्वं हरी॑ अजि॒रा धु॒रि वोळह॑वे॒ वहि॑ष्ठा धु॒रि वोळह॑वे॥

yuṅgdhvaṃ hyaruṣī rathe yuṅgdhvaṃ ratheṣu rohita: |yuṅgdhvaṃ harī ajirā dhuri voḷahave vahiṣṭhā dhuri voḷahave ||

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