तस्मिन्नेतस्मिन्नग्नौ देवा अन्नं जुह्वति तस्या आहुते रेतः संभवति ॥ २ ॥
In plain words
In this very fire the gods offer food as an oblation, and from that offering seed comes forth.
Close to the Sanskrit
In that very fire the gods offer food; from that offering seed is produced.