The Canons of the 217 Blessed Fathers who assembled at Carthage 21

21 Canon XXI

That the sons of clergymen are not to be joined in marriage with heretics.

Likewise it seemed good that the sons of clergymen should not be joined in matrimony with gentiles and heretics.

Notes.

Ancient Epitome of Canon XXI.

[The same as the canon.]

This is Canon xij. of Hippo, 393.

Philip Schaff and Henry Wace (eds.), New York: Christian Literature Publishing Co., 1890-1900. Public domain: English translation first published 1885-1900 (Nicene and Post-Nicene Fathers, Second Series).