Chapter 24.
46 Rogatianus of Nova said: "Christ established the Church, the devil heresy: how can the synagogue of Satan have the baptism of Christ?"
47. To him our answer is: Is it true that because Christ established the well-affectioned, and the devil the envious, therefore the party of the devil, which is proved to be among the envious, cannot have the baptism of Christ?
Source: On Baptism, Against the Donatists (New Advent)