Plato, Laws 872a

αὐτόχειρ μὲν μή, βουλεύσῃ δὲ θάνατόν τις ἄλλος ἑτέρῳ καὶ τῇ βουλήσει τε καὶ ἐπιβουλεύσει ἀποκτείνας αἴτιος ὢν καὶ μὴ καθαρὸς τὴν ψυχὴν τοῦ φόνου ἐν πόλει ἐνοικῇ, γιγνέσθων καὶ τούτῳ κατὰ ταὐτὰ αἱ κρίσεις τούτων πέρι πλὴν τῆς ἐγγύης, τῷ δὲ ὀφλόντι ταφῆς τῆς οἰκείας ἐξέστω τυχεῖν, τὰ δὲ ἄλλα κατὰ ταὐτὰ ὡσαύτως τῷ πρόσθεν ῥηθέντι περὶ αὐτὸν γιγνέσθω. τὰ αὐτὰ δὲ ἔστω ταῦτα ξένοισί τε πρὸς ξένους καὶ ἀστοῖσι καὶ ξένοις πρὸς ἀλλήλους, δούλοις

If a man does not slay another with his own hand, but plots death for him, and after killing him by design and plotting resides in the State, being responsible for the murder and not innocent or pure of heart in respect of it,—in his case the prosecutions on this charge shall proceed in the same way, except in the matter of bail. And the person convicted shall be allowed to have burial at home; but all else shall be carried out in his case in the same way as in the case last described. And these same regulations shall govern all cases where Strangers are at law with Strangers, or citizens and Strangers at law with each other,