Rishi: Traditionally ascribed within late Vājasaneyin collections to the ritual lineage (often left unspecified in the Saṃhitā itself for such formulas)
Devata: Āpaḥ and Oṣadhayaḥ (Waters and Plants) as purificatory powers
Chandas: Mixed/prose-like yajus-formula (not a strict ṛgvedic metre)