Plato, Laws 874b

ἀγορᾷ κηρῦξαι τῷ κτείναντι τὸν καὶ τὸν καὶ ὠφληκότι φόνου μὴ ἐπιβαίνειν ἱερῶν μηδὲ ὅλης χώρας τῆς τοῦ παθόντος, ὡς, ἂν φανῇ καὶ γνωσθῇ, ἀποθανούμενον καὶ ἔξω τῆς τοῦ παθόντος χώρας ἐκβληθησόμενον ἄταφον. οὗτος δὴ νόμος εἷς ἡμῖν ἔστω κύριος περὶ φόνου κείμενος.καὶ τὰ μὲν περὶ τὰ τοιαῦτα μέχρι τούτων οὕτως· ὧν δὲ ὁ κτείνας ἐφʼ οἷς τε ὀρθῶς ἂν καθαρὸς εἴη, τάδε ἔστω· Νύκτωρ φῶρα εἰς οἰκίαν εἰσιόντα ἐπὶ κλοπῇ χρημάτων ἐὰν

to the doer of the deed, and the prosecutor, when he has proved his claim, shall give public warning in the market-place to the slayer of So-and-so, convicted of murder, not to set foot in holy places nor anywhere in the country of the victim, since, if he appears and is known, he shall be put to death and be cast out from the country of the victim without burial. So let this stand as one section of our code of law dealing with murder. Thus far we have dealt with crimes of the kind described; in what follows we shall describe the cases and the circumstances under which the slayer will rightly be pronounced guiltless. If a man catch and slay a thief who is entering his house by night to steal goods, he shall be guiltless;