Passage 3.17.5
ἐν ἀριστερᾷ δὲ τῆς Χαλκιοίκου Μουσῶν ἱδρύσαντο ἱερόν, ὅτι οἱ Λακεδαιμόνιοι τὰς ἐξόδους ἐπὶ τὰς μάχας οὐ μετὰ σαλπίγγων ἐποιοῦντο ἀλλὰ πρός τε αὐλῶν μέλη καὶ ὑπὸ λύρας καὶ κιθάρας κρούσμασιν. ὄπισθεν δὲ τῆς Χαλκιοίκου ναός ἐστιν Ἀφροδίτης Ἀρείας· τὰ δὲ ξόανα ἀρχαῖα εἴπερ τι ἄλλο ἐν Ἕλλησιν.
On the left of the temple of Athena Chalkioikos they set up a sanctuary of the Muses, because the Lacedaemonians made their sorties into battle not to the accompaniment of trumpets, but to melodies of flutes and to the striking of lyres and kitharas. Behind the temple of Athena Chalkioikos there is a temple of Aphrodite Areia (Warlike); its wooden statues are among the most ancient images anywhere in Greece.