1Athanasius tells Rufinianus that the councils decided to pardon clergy who had yielded to force without embracing Arianism and to let them keep their rank, but to admit the leaders of the heresy only as laymen.
J.-P. Migne, ed., Patrologiae cursus completus, Series Graeca 26 (Paris: Migne, 1857), Epistula ad Rufinianum (reprinting the Benedictine edition of B. de Montfaucon, Paris, 1698) (Printed edition in the public domain; OCR transcription of public-domain page images)
Critical editions
Hans-Georg Opitz et al., eds., Athanasius Werke, vol. 2 (Berlin: de Gruyter, 1935–) (cited, not reproduced)