Valmiki Ramayana Yuddha Kanda Sarga 120 Shloka 7
Original Shlokaऋतधामावसुःपूर्वंवसूनां च प्रजापतिः ।।6.120.7।। त्रयाणामपिलोकानामादिकर्तास्वयंप्रभुः ।
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पूर्वम् in the past, वसूनाम् Vasus, ऋतधामा Rtadhama, वसुः Vasu, त्रयाणामपि creator of the three worlds, लोकानाम् in the world, आदिकर्ता first creator, स्वयंप्रभुः Lord himself, प्रजापतिः selfconstituted ruler
" Among the Vasus, you are the Rtadhama and the creator of the three worlds and the first creator and selfconstituted ruler."