तस्मिन्नेतस्मिन्नग्नौ देवाः श्रद्धां जुह्वतितस्या आहुतेः सोमो राजा संभवति ॥
In plain words
Into this very fire the gods offer faith as an oblation, and from that offering King Soma is born.
Close to the Sanskrit
In this very fire the gods offer faith; from that oblation King Soma comes into being.