Canon 73
On the prohibition of the image of the Cross on the ground (semi) (so as not to trample underfoot the sign of our victory)
Since the life-giving Cross has shown us salvation, it is necessary for us to strive with all diligence to give due honor to that through which we were saved from ancient sin. Therefore, worshiping him with mind, word, and feeling, we command by all means to blot out the images of the cross made by anyone on the ground, so that they do not step on the sign of our victory and thereby dishonor him. So, from now on, we determine to excommunicate those who imprint the image of the cross on the earth.
Greek original
Τοῦ ζωοποιοῦ σταυροῦ δείξαντος ἡμῖν τὸ σωτήριον, πᾶσαν σπουδὴν ἡμᾶς τιθέναι χρή, τοῦ τιμὴν τὴν ἀξίαν ἀποδιδόναι τῷ δι᾿ οὗ σεσώσμεθα τοῦ παλαιοῦ πτώματος. Ὅθεν καὶ νῷ καὶ λόγῳ, καὶ αἰσθήσει, τὴν προσκύνησιν αὐτῷ ἀπονέμοντες, τοὺς ἐν τῷ ἐδάφει τοῦ σταυροῦ τύπους ὑπό τινων κατασκευαζομένους, ἐξαφανίζεσθαι παντοίως προστάσσομεν, ὡς ἂν μὴ τῇ τῶν βαδιζόντων καταπατήσει τὸ τῆς νίκης ἡμῖν τρόπαιον ἐξυβρίζοιτο. Τοὺς οὖν ἀπὸ τοῦ νῦν τοῦ σταυροῦ τύπον ἐπὶ ἐδάφους κατασκευάζοντας, ὁρίζομεν ἀφορίζεσθαι.