Rishi: Not determinable from provided excerpt alone (RV 8.46 is within the Vālakhilya/appendix-type cluster in some recensions; attribution varies by tradition).
Devata: Likely a praise of a beneficent power associated with impetus and gifts; precise devatā uncertain from this single mantra without hymn header (possible Indra-associated dāna context in 8.46).
Chandas: Not determinable with certainty from single verse without full metrical scan; likely a common RV meter (Triṣṭubh/Jagatī) in this section.
Samhita Patha (Devanagari)अध प्रियमिषिराय षष्टिं सहस्रासनम् । अश्वानामिन्न वृष्णाम् ॥
Transliterationadha priyám iṣirā́ya ṣaṣṭíṃ sahásrā́sanam | aśvā́nām ín na vṛ́ṣṇām ||
TranslationEntão, ao amado Impulsionador, Iṣirā, (vem) um amplo assento de plenitude: sessenta mil — como a força transbordante dos garanhões.
Word by Wordप्रियम्dear, pleasing (thing) इषिरायto Iṣira (the recipient) सहस्रासनम्a thousand seats; thousandfold seat/seatings वृष्णाम्of the bulls; of the strong ones