The Vatican has issued further strict guidelines on the celebration of the Traditional Latin Mass in response to questions about the motu proprio Traditionis custodes.

The explanatory document, which bans confirmations and ordinations according to pre-Vatican II Roman Missals, was published on Saturday with Pope Francis’ approval, the Vatican’s liturgy office said. 

Traditionis custodes is a July 16 motu proprio in which Pope Francis placed sweeping restrictions on the celebration of Mass using the 1962 Roman Missal, known variously as the extraordinary form of the Roman Rite, the Tridentine Mass, and the Traditional Latin Mass. (You can read a further explanation of the document here.)