Council of Trent: Session XIV, Penance, Chapter IX

CHAPTER IX. On Works of Satisfaction.

The Synod teaches furthermore, that so great is the liberality of the divine munificence, that we are able through Jesus Christ to make satisfaction to God the Father, not only by punishments voluntarily undertaken of ourselves for the punishment of sin, or by those imposed at the discretion of the priest according to the measure of our delinquency, but also, which is a very great proof of love, by the temporal scourges inflicted of God, and borne patiently by us.

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