Rigveda 6.67.4

अश्वा॒ न या वा॒जिना॑ पू॒तब॑न्धू ऋ॒ता यद्गर्भ॒मदि॑ति॒र्भर॑ध्यै ।प्र या महि॑ म॒हान्ता॒ जाय॑माना घो॒रा मर्ता॑य रि॒पवे॒ नि दी॑धः॥

aśvā na yā vājinā pūtabandhū ṛtā yadgarbhamaditirbharadhyai |pra yā mahi mahāntā jāyamānā ghorā martāya ripave ni dīdhaḥ ||

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