Acts 16:21

21andκαὶpreachκαταγγέλλουσινcustomsἔθηthatἃnotοὐκit is lawfulἔξεστινfor usἡμῖνto acceptπαραδέχεσθαιnorοὐδὲto practiceποιεῖνRomansῬωμαίοιςbeingοὖσιν.

and proclaim customs not lawful for us, being Romans, to accept nor to practice.”