Правило 46
About the overthrow of those bishops and priests who accept baptisms and sacrifices of heretics.
We command that a bishop or presbyter who recognizes the correct baptism of heretics or who accepts their sacrifice be deposed. For what agreement is there between Christ and Belial? Or what is the complicity of the faithful with the infidel? (2 Cor. 6:15).
Greek original
Ἐπίσκοπον, ἢ πρεσβύτερον, αἱρετικῶν δεξαμένους βάπτισμα ἢ θυσίαν, καθαιρεῖσθαι προστάττομεν. Τίς γὰρ συμφώνησις Χριστῷ πρὸς Βελίαρ; ἢ τίς μερὶς πιστῷ μετὰ ἀπίστου;
Parallel canons
Ап.4768IВс.19IIВс.7Трул.95Лаод.7Вас.147