Rishi: Śruti-mantra (ṛṣi not operationally specified in VS ritual use)
Devata: Agni (solarized, dawn-linked)
Chandas: Triṣṭubh (probable; long pāda structure—verify by syllable count)
Samhita Patha (Devanagari)
पा॒व॒कया॒ यश्चि॒तय॑न्त्या कृ॒पा क्षाम॑न् रुरु॒च उ॒षसो॒ न भा॒नुना॑ । तूर्व॒न् न याम॒न्नेत॑शस्य॒ नू रण॒ आ यो घृ॒णे न त॑तृषा॒णो अ॒जर॑:
Transliteration
pāvakáyā yáś citáyantyā kṛpā́ kṣā́man rurúca uṣáso ná bhānúnā | tū́rvan ná yā́mann étaśasya nú raṇa ā́ yó ghṛṇé ná tatṛṣāṇó ajáraḥ
Translation
With purifying flame that maketh manifest, with gracious favour, he shineth on the earth like Dawn with her beam; impetuous in his course like Etaśa, now in exultation,—he, unaging, cometh with ardour, thirsting (for the offering).