Herbert Weir Smyth, A Greek Grammar for Colleges

a. With the (first or second) aorist subjunctive, less often with the present subjunctive (1804). Thus, ““ἢν νι_κήσωμεν, οὐ μή ποτε ὑ_μῖν Πελοποννήσιοι ἐσβάλωσιν ἐς τὴν χώρα_ν” if we are victorious, the Peloponnesians will never invade your territory” T. 4.95, ““οὐδεὶς μηκέτι μείνῃ τῶν πολεμίων” not one of the enemy will stand his ground any longer” X. A. 4.8.13, οὔτι μὴ φύγητε you shall not escape (a threat) E. Hec. 1039, ““οὐ μή σοι δύνωνται ἀντέχειν οἱ πολέμιοι” your enemies will not be able to withstand you” X. Hi. 11.15.

b. With the future indicative (first and third person). Thus, ““οὔ σοι μὴ μεθέψομαί ποτε” never will I follow thee” S. El. 1052, οὐ μὴ δυνήσεται Κῦρος εὑρεῖν Cyrus will not be able to find X. C. 8.1.5. In indirect discourse, the future optative or infinitive; as ““ἐθέσπισεν . . . ὡς οὐ μή ποτε πέρσοιεν” he prophesied that they never would destroy” S. Ph. 611, ““εἶπεν . . . οὐ μή ποτε εὖ πρά_ξειν πόλιν” he declared that the city would never prosper” E. Phoen. 1590.