Правило 21
About the prohibition for subdeacons to touch the holy paten and the holy chalice at the time when the Holy Sacrifice is offered, or to carry them during the Great Entry.
About the fact that ministers should not be in the diaconium and touch sacred vessels.
Greek original
Ὅτι οὐ δεῖ ὑπηρέτας ἔχειν ἐν τῷ διακονικῷ, καὶ ἄπτεσθαι τῶν ἱερῶν σκευῶν.
Parallel canons
Трул.415Лаод.2022242543