Śatapatha Brāhmaṇa ("of a hundred paths") 8.5.2.7

8.5.2.7

tadyāḥ purastādupadadhāti | prāṇastāsām prathamā vyāno dvitīyodānastṛtīyodānaścaturthī vyānaḥ pañcamī prāṇaḥ ṣaṣṭhī prāṇaḥ saptamī vyāno 'ṣṭamyudāno navamī yajamāna evātra daśamī sa eṣa yajamāna etasyāṃ virājyadhyūḍhaḥ pratiṣṭhitaḥ prāṇamayyāmarvācīśca parācīścopadadhāti tasmādime prāṇā arvāñcaśca parāñcaśca

And, again, as to why he lays it down by means of Indra and Agni, and settles it by means of Visvakarman. When Pragâpati had become relaxed (disjointed), the deities took him and went off in different directions. Indra and Agni, and Visvakarman took his middle part, and kept going away from him.