NPNF2-01. Eusebius Pamphilius: Church History, Life of Constantine, Oration in Praise of Constantine

Chapter XXVIII.—Musanus and His Writings.

And as for Musanus,¹³²¹ whom we have mentioned among the foregoing writers, a certain very elegant discourse is extant, which was written by him against some brethren that had gone over to the heresy of the so-called Encratites,¹³²² which had recently sprung up, and which introduced a strange and pernicious error. It is said that Tatian was the author of this false doctrine.