Rishi: Bharadvāja Bārhaspatya (traditional for Mandala 6 hymns; specific attribution for 6.39 commonly to Bharadvāja)
Devata: Indra (as luminous leader yoked to Ṛta; Swar-finder)
Chandas: Triṣṭubh (probable for this section; Mandala 6 Indra hymns predominantly Triṣṭubh)
Samhita Patha (Devanagari)अयं रोचयदरुचो रुचानोऽयं वासयद्व्यृतेन पूर्वीः । अयमीयत ऋतयुग्भिरश्वैः स्वर्विदा नाभिना चर्षणिप्राः ॥
Recitation with translationRig Veda 6.39.4
Transliterationayáṃ rocayad arúco rucānó ’ayáṃ vāsayad ví ṛ́tena pūrvī́ḥ | ayám īyate ṛtayúg-bhir áśvaiḥ svàr-vidā nā́bhinā carṣaṇi-prā́ḥ ||
Translationこの輝く者は、その光によって光なきものを燃え立たせ、また真理(ṛta)によって古き形成をひろげる。ṛtaに軛を結ぶ馬らとともに進み、天光スヴァル(svar)を見出す者として、臍(nābhi)—合一の内なる座—によって人々(諸族)を前へと押し進める。
Word by Wordरोचयत्made shine, illumined अरुचःthe unshining/dark (ones), the non-luminous रुचानःshining, being radiant वासयत्clothed, caused to dwell/cover ऋतेनwith ṛta (cosmic order/truth) पूर्वीःthe former/ancient (ones) ऋतयुग्भिःwith ṛta-yoked (ones) स्वर्विदाwith the heaven-finder (as guide/means) नाभिनाwith the navel; with the hub/center चर्षणिप्राःsupporting/filling the peoples (men/tribes) 
