διακρατητέον
From LSJ
τὸ γὰρ βραχύ τι τοῦτο πᾶσαν ὑμῶν ἔχει τὴν βεβαίωσιν καὶ πεῖραν τῆς γνώμης → this trifle contains the whole seal and trial of your resolution
English (LSJ)
A one must hold fast, Archig. ap. Gal.13.176.
Spanish (DGE)
medic. hay que sujetar, hay que vendar τὰ ἄκρα ... ταινιδίοις Archig. en Aët.9.6, cf. en Gal.13.176, Paul.Aeg.3.9.3, τοὺς δακτύλους Anon.Med.Acut.Chron.2.3.4.