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
Cāsus: i, m.,
I a river of Albania, that flows into the Caspian Sea, Plin. 6, 13, 15, § 39; Mel. 3, 5, 4.