ἐγκαθείργω
From LSJ
μὴ κακὸν εὖ ἔρξῃς· σπείρειν ἴσον ἔστ' ἐνὶ πόντῳ → do no good to a bad man; it is like sowing in the sea
English (LSJ)
and ἐγκάθ-γνῡμι,
A shut up, enclose, ib.5.1.2; φορβείᾳ τὸ ῥαγδαῖον Plu.2.456c:— Pass., ib.951b, Jul.Or.7.206b:—also ἐγκατείργω, Agath.1.11, al.:— Pass., Aret.SA1.5, Herm. ap. Stob.1.49.44.