Iessis, bishop of Speyer, says that he heard with his own ears, in the presence of Martin, bishop of Mainz, Presbyter Metropius and Deacon Victor, Bishop Euphratas negating the deity of Christ.
Bishop Justinian says that the clergy of Cologne sent letters to some bishops informing them about Euphratas' heresy.
Bishop Servatius says that Athanasius, bishop of Alexandria along with many presbyters and deacons heard Euphratas blaspheming.
(ed. Munier 1963: 28; summarised by J. Szafranowski)