The son of a brahmin of Nálakagáma, a friend of Sáriputta before the latter left the world. Later, Sunága heard the Buddha preach, entered the Order, and attained arahantship.
In the time of Sikhí Buddha, thirty one kappas ago, he was a brahnnin versed in the Vedas, and lived in a forest hut near Mount Vasabha as teacher of three thousand pupils. One day he met Sikhí Buddha, and, knowing by the signs on his body that he was a Buddha of infinite wisdom, he was suffused with joy, as a result of which he was born after death in the deva world. Twenty seven kappas ago he was a king named Siridhara (Thag.vs.85; ThagA.i.182).
He is evidently identical with Rahosaññaka of the Apadána. Ap.i.166f.