Rishi: Traditionally associated with Puruṣa/Nārāyaṇa-cosmology; in Vājasaneyin transmission often treated as anonymous/ādi-mantra complex rather than a single ṛṣi attribution.
Devata: Viśvakarman; Tvaṣṭṛ (as formal shaper); implicitly Prajāpati as the sacrificial totality.
Chandas: Triṣṭubh (dominant cadence; mixed/irregular in some recensional analyses).
a̱dbhyáḥ sámbhṛtaḥ pṛthivyài rasá̄c ca viśvákarmāṇaḥ sám avartatá̄gre | tásya tváṣṭā vidádhad rūpám eti tán mártyasya devatvám ājánam ágre
Translation
From the Waters compacted, and from the Earth’s sap, Viśvakarman came into being in the beginning. Of him Tvaṣṭṛ, disposing, enters into the form: that is the godhead of the mortal, innate from the first.