ξένος ὢν ἀκολούθει τοῖς ἐπιχωρίοις νόμοις → as a foreigner, follow the laws of that country | when in Rome, do as the Romans do
contextim: adv. contexo,
I in a connected manner, connectedly (very rare): luto nidificantes paene contextim, * Plin. 10, 53, 74, § 147; Aug. Ep. 112, 15.