χαλαστέον
From LSJ
τῶν δ᾽ ὀρθουμένων σῴζει τὰ πολλὰ σώμαθ᾽ ἡ πειθαρχία → But of those who make it through, following orders is what saves most of their lives (Sophocles, Antigone 675f.)
English (LSJ)
A one must relax, Herod.Med. in Rh.Mus.58.91, Gal.Sect.Intr.7.
Greek (Liddell-Scott)
χαλαστέον: δεῖ χαλᾶν, Σωρ. Ἐφ. ἔκδ. Erm. σ. 81.