Canon 27
About the fact that it is not appropriate to take anything with you from agape.
Priests, clergy or laity, when they are called to agapa, should not take anything with them, because this is an insult (τήν ὕβριν) to the church rite.
Greek original
Ὅτι οὐ δεῖ ἱερατικούς, ἢ κληρικούς, ἢ λαϊκούς, καλουμένους εἰς ἀγάπην, μέρη αἵρειν, διὰ τὸ τὴν ὕβριν τῇ τάξει προστρίβεσθαι τῇ ἐκκλησιαστικῇ.
Parallel canons
Трул.74Гангр.11Лаод.28Карф.42