Constructio Praegnans.—a. A verb of motion is often used with a preposition with the dative to anticipate the rest that follows the action of the verb: ἐν τῷ ποταμῷ ἔπεσον they fell (into and were) in the river Ages. 1.32. This use is common with τιθέναι, ἱδρῡ́ειν, καθιστάναι, etc., and with tenses of completed action which imply rest; as οἱ ἐν τῇ νήσῳ ἄνδρες διαβεβηκότες the men who had crossed to (and were in) the island 7.71.
b. A verb of rest is often followed by a preposition with the accusative to denote motion previous to or following upon the action of the verb: παρῆσαν εἰς Σάρδεις (they came to Sardis and were in the city) they arrived at Sardis A. 1.2.2, ἐς Κῠ̄ρήνην ἐσώθησαν
they were saved by reaching Cyrene 1.110, ᾑρέθη πρεσβευτὴς εἰς Λακεδαίμονα he was chosen ambassador (to go) to Lacedaemon H. 2.2.17. Cp. 1692. 1. a.