Rigveda 3.57.4

अच्छा॑ विवक्मि॒ रोद॑सी सु॒मेके॒ ग्राव्णो॑ युजा॒नो अ॑ध्व॒रे म॑नी॒षा ।इ॒मा उ॑ ते॒ मन॑वे॒ भूरि॑वारा ऊ॒र्ध्वा भ॑वन्ति दर्श॒ता यज॑त्राः॥

acchā vivakmi rodasī sumeke grāvṇo yujāno adhvare manīṣā |imā u te manave bhūrivārā ūrdhvā bhavanti darśatā yajatrāḥ ||

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