ποταμῷ γὰρ οὐκ ἔστιν ἐμβῆναι δὶς τῷ αὐτῷ → it is impossible to step twice in the same river, you cannot step twice into the same rivers
praecepto: āre, v. freq. a. id.,
I to prescribe often: praeceptat, in Saliari carmine est saepe praecipit, Fest. p. 205 Müll.
præceptō, āre, fréq. de præcipio : Fest. 205.
