Mr. Dodgson supposes this word to mean “outward, as contrasted with the inward, ‘praying always.’” Oehler interprets, “ex vita communi.” But perhaps what Tertullian says lower down in the chapter, “albeit they stand simply without any precept enjoining their observance,” may give us the true clue to his meaning; so that “extrinsecus” would ="extrinsic to any direct injunction of our Lord or His apostles.”