Правило 10
About the prohibition for Christians to pray with those excommunicated from the Church, even privately.
If anyone prays with a stranger, even in the house, let him be excommunicated.
Greek original
Εἴ τις ἀκοινωνήτῳ κἄν ἐν οἴκῳ συνεύξηται, οὗτος ἀφοριζέσθω.
Parallel canons
Ап.111232454865IВс.5Антиох.2Карф.9