ζευκτήριος
From LSJ
μή μοι θεοὺς καλοῦσα βουλεύου κακῶς· πειθαρχία γάρ ἐστι τῆς εὐπραξίας μήτηρ, γυνὴ Σωτῆρος· ὦδ᾽ ἔχει λόγος → When you invoke the gods, do not be ill-advised. For Obedience is the mother of Success, wife of Salvation—as the saying goes.
English (LSJ)
α, ον,
A fit for joining or yoking, γέφυρα γαῖν δυοῖν ζ. A.Pers.736 (troch.); πάτερ . . Μαινάδων ζευκτήριε Id.Fr.382. II as Subst., ζευκτήριον, τό,= ζυγόν, yoke, Id.Ag.529, POxy.934.5 (iii A.D.); ζευκτηρία, ἡ,= ζεύγλη 11, Act.Ap.27.40.