Rishi: Vasiṣṭha (traditional attribution for RV 3.8 in the Vasiṣṭha family book)
Devata: Vanaspati / sacrificial post and the deities supporting the yajña (contextual); inner sense: the divine formative power that establishes the rite and uplifts consciousness
Chandas: Triṣṭubh (probable for this section; requires full hymn metrical verification)