The conditions for the indulgences were made public in a statement Saturday signed by Cardinal James Francis Stafford and Bishop Gianfranco Girotti, respectively penitentiary major and regent of the Apostolic Penitentiary.
Benedict XVI will grant a plenary indulgence to faithful who "gather at Sydney, Australia, in the spirit of pilgrimage" to participate in celebrations for the 23rd World Youth Day, and partial indulgence to "all those who, wherever they are, will pray for the spiritual goals of this meeting and for its happy outcome," the decree said.
"Indeed, young people gathered around the Vicar of Christ will participate in the sacred functions and above all have recourse to the sacraments of reconciliation and the Eucharist," it added. "In the sacraments received with a sincere and humble heart, they will earnestly desire to strengthen themselves in the Spirit, and, confirmed by the chrism of salvation, will openly witness the faith before others even to the ends of the earth. May God grant that the very presence of the Supreme Pontiff among the young people gathered in Sydney express and render it such."
The typical conditions for indulgences must also be fulfilled.
The decree explained: "The plenary indulgence is granted to the faithful who will devotedly participate at some sacred function or pious exercise taking place during the 23rd World Youth Day, including its solemn conclusion, so that, having received the sacrament of reconciliation and being truly repentant, they receive holy Communion and devoutly pray according to the intentions of His Holiness.
"The partial indulgence is granted to the faithful, wherever they are during the above-mentioned meeting, if, at least with a contrite spirit, they will raise their prayer to God the Holy Spirit, so that young people are drawn to charity and given the strength to proclaim the Gospel with their life.
"So that all the faithful may more easily obtain these heavenly gifts, priests who have received legitimate approval to hear sacramental confessions, should welcome them with a ready and generous spirit and suggest public prayers to the faithful, for the success of the same World Youth Day."