Nicene and Post-Nicene Fathers, Ser. II, Vol. XIV: The Third Ecumenical Council: The Council of Ephesus.: Canon IV
If any of the clergy should fall away, and publicly or privately presume to maintain the doctrines of Nestorius or Celestius, it is declared just by the holy Synod that these also should be deposed.
If any of the clergy shall consent to Celestine 264 or Nestorius, let them be deposed.
It should read “Celestius”; see Scholion on Canon I.