In plain words
The poet, singing Rāma of Kaṇṇapuram to sleep: O you who created the gods and the demons and the regions in every direction! O you who lie asleep in the city of Araṅgam, so that all might come and bow at your feet! My dark gem of Kaṇṇapuram, where the good river Kāviri flows! O master of the handsome, dread bow that urges its holder to shoot! Rāghava, tālēlō.