In plain words
The poet, of Śrīraṅgam: The longed-for place where the one rich in valour [Rāma] dwells for ever, he who bent his bow [Śārṅga], loosed his arrows, and cut off and felled the ten heads of the king of Laṅkā, is the temple they call Araṅgam, where the long-flowing flood spreads out, ceaselessly bearing gold along and beating on its shores: the temple where four-faced Brahmā worshipped.