Passage 7.20.2
τὰ δὲ ἐφʼ ἡμῶν στεφάνους μὲν τῶν ἀσταχύων ἀποτίθενται παρὰ τῇ θεῷ, λουσάμενοι δὲ τῷ ποταμῷ καὶ αὖθις στεφάνους ἐπιθέμενοι κισσοῦ πρὸς τὸ ἱερὸν ἴασι τοῦ Αἰσυμνήτου. ταῦτα μέν σφισιν οὕτω δρᾶν καθέστηκε, τοῦ περιβόλου δέ ἐστιν ἐντὸς τῆς Λαφρίας καὶ Ἀθηνᾶς ναὸς ἐπίκλησιν Παναχαΐδος· ἐλέφαντος τὸ ἄγαλμα καὶ χρυσοῦ.
In my time, they place crowns of grain stalks before the goddess, and then having bathed in the river, they put on crowns of ivy and proceed to the sanctuary of Aesymnetes. This is their established custom. Within the enclosure of Lafria stands also a temple of Athena, surnamed Panachais; her image is made of ivory and gold.