double-facedness and double-tonguedness is Nifaq with the Almighty

"Let it be known to you, dear friend, that one of the forms of Nifaq, double-facedness and double-tonguedness is Nifaq with the Almighty, the King of kings, and the Bestower and the Nourisher, with which we are inflicted in this world but are not aware of it. Thick curtains of ignorance and folly and dark veils of the love of the self and the world have obstructed our vision in such a way that it is not possible for us to know our defects before the time of the divulging of secrets and the raising of these curtains and veils and before departing from this world of nature and saying farewell to this house of illusion and this zone of neglect and stupor.”

SOURCE: FORTY HADITH | IMAM KHOMEINI (R)