In plain words
The poet, of Tiruvaraṅgam: In a single moment the mighty one brought back the four sons who had died in the very room where they were born, gave them to their parents and made them accept the boys as their own: his town is the place called Tiruvaraṅgam, where noble knowers of the Veda live, who tend the distinguished three fires the Veda ordains and cherish the guests [Śrīvaiṣṇavas] who come to their homes.