Council of Trent: Session XXIII, Chapter Iv Who Are To Be Initiated By The First Tonsure

CHAPTER IV Who are to be initiated by the first tonsure.

None shall be initiated by the first tonsure, who have not received the sacrament of Confirmation; and who have not been taught the rudiments of the faith; and who do not know how to read and write; and in whose regard there is not a probable conjecture, that they have chosen this manner of life, that they may render unto God a faithful service, and not that they may fraudulently withdraw themselves from Secular jurisdiction.

Translation: J. Waterworth, The Canons and Decrees of the Council of Trent (1848), Hanover Historical Texts Project transcription (1995).