Shatapatha Brahmana 7.1.1.43

7.1.1.43

māteva putram pṛthivī purīṣyamiti | māteva putram pṛthivī paśavyamityetadagniṃ sve yonāvabhārukhetyagniṃ sve yonāvabhārṣīdukhetyetattāṃ viśvairdevairṛtubhiḥ saṃvidānaḥ prajāpatirviśvakarmā vimuñcatviyṛtavo vai viśve devāstadenāṃ viśvairdevairṛtubhiḥ saṃvidānaḥ prajāpatirviśvakarmā vimuñcati tāmuttarato 'gnernidadhātyaratnimātre tasyokto bandhuḥ

[He unlooses it from the netting, with Vâg. S. XII, 61] 'Even as a mother her son, so hath the Earth borne Agni Purîshya,'--that is, Agni, favourable to cattle;--'she, the Ukhâ, in her own womb;' that is, the Ukhâ has borne Agni in her own womb;--'May Pragâpati, the all-former, release her, in concert with the All-gods, the seasons!' the All-gods doubtless are the seasons: thus Pragâpati, the all-former, releases it, in concert with the All-gods, the seasons. He deposits it north of the fire, at a cubit's distance: the significance of this has been explained.