74 We pray the God of all mercies, through the intercession of His Blessed Mother (who so recently smiled on Us from the splendours of her pluricentenary celebration), and of the Holy Apostles Peter and Paul, that He will make us all to see what we ought all to do, and that He will give us the strength to put it into effect. May Our apostolic benediction, the augury and pledge of divine blessings, descend upon you, Venerable Brethren, on your clergy and on your people, and remain with you for ever. Rome, from the Vatican, on the Solemnity of the Holy Apostles Peter and Paul, June 29, 1931.
Source: Non Abbiamo Bisogno (Vatican.va)