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From LSJ

Ἀμήχανον δὲ παντὸς ἀνδρὸς ἐκμαθεῖν ψυχήν τε καὶ φρόνημα καὶ γνώμην πρὶν ἂν ἀρχαῖς τε καὶ νόμοισιν ἐντριβὴς φανῇ → It is impossible to know the spirit, thought, and mind of any man before he be versed in sovereignty and the laws

Sophocles, Antigone, 175-7

French (Bailly abrégé)

dat. sg. de ὄψις;
2ᵉ sg. att. de ὄψομαι.

Russian (Dvoretsky)

ὄψει:
I dat. к ὄψις.
II ион.-атт. = ὄψεαι.