What was Indian mythological figure Rishyashringa or Shringirishi famous for?

Rishyashringa, son of Vibhandaka sage was brought up in wilderness and knew no human beings except his father. The childless king Dasharatha was advised by sage Vasishtha to invite Rishyashringa, known for his spiritual powers to the city of Ayodhya, to perform a special sacrifice for obtaining sons under his supervision. Accordingly teams of dancing girls were sent to the hermitage who tactfully brought the innocent youth to Ayodhya. He helped the king to conduct the much-needed sacrifice.