ἐνδιατριπτέον
From LSJ
English (LSJ)
A one must dwell upon, τινί Luc.Hist. Conscr.6; one must stay in a place, Ath.Med. ap. Orib.inc.23.13; ἐ. τούτοις one must continue the treatment, Sor.1.46.
Greek (Liddell-Scott)
ἐνδιατριπτέον: δεῖ ἐνδιατρίβειν, τινὶ Λουκ. Ἱστ. Συγγρ. 6.