τοῖς οἰκείοις βουλεύμασιν ἁλίσκεσθαι → hoist by one's own petard, hoist with one's own petard, hoist on one's own petard, hoisted by one's own petard, be hoist with one's own petard
SourceSpanish (DGE)
ἡ
Harpasa ciudad del norte de Caria al norte del curso inferior del río Harpeso, actual Harpas-Kalessi, Ptol.Geog.5.2.15, St.Byz.