Rigveda 10.82.6

तमिद्गर्भं॑ प्रथ॒मं द॑ध्र॒ आपो॒ यत्र॑ दे॒वाः स॒मग॑च्छन्त॒ विश्वे॑ ।अ॒जस्य॒ नाभा॒वध्येक॒मर्पि॑तं॒ यस्मि॒न्विश्वा॑नि॒ भुव॑नानि त॒स्थुः॥

tamidgarbhaṃ prathamaṃ dadhra āpo yatra devāḥ samagacchanta viśve |ajasya nābhāvadhyekamarpitaṃ yasminviśvāni bhuvanāni tasthuḥ ||

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