Nicene and Post-Nicene Fathers, Vol. IV:
Writings in Connection with the Donatist Controversy.: Chapter 18

Chapter 18.—34.  Irenæus of Ululi 1811 said:  "If the Church does not baptize a heretic, because it is said that he has been baptized already, then heresy is the greater." 1812

35.  The answer is:  On the same principle it might be said, If therefore the Church does not baptize the covetous man, because it is said that he has been baptized already, then covetousness is the greater.  But this is false, therefore the other is also false.

Footnotes

Ululi (Ullita, Vallita) in ecclesiastical province of Numidia.

Conc. Carth. sec. 54.