Rigveda 1.21.4

उ॒ग्रा सन्ता॑ हवामह॒ उपे॒दं सव॑नं सु॒तम् ।इ॒न्द्रा॒ग्नी एह ग॑च्छताम्॥

ugrā santā havāmaha upedaṃ savanaṃ sutam |indrāgnī eha gacchatām ||

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