Can. 1308
© Libreria Editrice Vaticana Source: vatican.va
§1. A reduction of the obligations of Masses, to be made only for a just and necessary cause, is reserved to the diocesan bishop and to the supreme moderator of a clerical institute of consecrated life or a society of apostolic life.
§2. With regard to Masses independently founded in legacies, the diocesan bishop has the power, because of diminished revenues and for as long as the cause exists, to reduce the obligations to the level of offering legitimately established in the diocese, provided that there is no one obliged to increase the offering who can effectively be made to do so.
§3. The diocesan bishop also has the power to reduce the obligations or legacies of Masses binding an ecclesiastical institute if the revenue has become insufficient to pursue appropriately the proper purpose of the institute.
§4. The supreme moderator of a clerical institute of consecrated life or a society of apostolic life possesses the same powers mentioned in §§2 and 3.
Wording replaced by Cf. Apostolic Letter issued “Motu proprio” Competentias quasdam decernere introducing changes to some norms of the Code of Canon Law and the Code of Canons of the Eastern Churches (11 February 2022) [Earlier version]
§1. A reduction of the obligations of Masses, to be made only for a just and necessary cause, is reserved to the Apostolic See, without prejudice to the following prescripts.
§2. If it is expressly provided for in the charters of the foundations, the ordinary is able to reduce the Mass obligations because of diminished revenues.
§3. With regard to Masses independently founded in legacies or in any other way, the diocesan bishop has the power, because of diminished revenues and for as long as the cause exists, to reduce the obligations to the level of offering legitimately established in the diocese, provided that there is no one obliged to increase the offering who can effectively be made to do so.
§4. The diocesan bishop also has the power to reduce the obligations or legacies of Masses binding an ecclesiastical institute if the revenue has become insufficient to pursue appropriately the proper purpose of the institute.
§5. The supreme moderator of a clerical religious institute of pontifical right possesses the same powers mentioned in §§3 and 4.
Read the whole title TITLE IVPious Wills in General and Pious Foundations 1299–1310