4 In order that We may receive the gift of heavenly light, do you, Venerable Brethren, in pious competition, unite your entreaties with Ours. But, while paternally exhorting you to do this, thus following the example of Our Predecessors, and particularly that of Pius IX when about to define the dogma of the Mother of God's Immaculate Conception, we earnestly beg you to inform us about the devotion of your clergy and people (taking into account their faith and piety) toward the Assumption of the most Blessed Virgin Mary. More especially We wish to know if you, Venerable Brethren, with your learning and prudence consider that the bodily Assumption of the Immaculate Blessed Virgin can be proposed and defined as a dogma of faith, and whether in addition to your own wishes this is desired by your clergy and people.
Source: Deiparae Virginis Mariae (Vatican.va)