God has reserved to Himself the right to accept entirely, or in part, the satisfaction offered to any soul in Purgatory.This acceptance depends upon His holy and adorable Will, and, perhaps, in great measure upon the care of the soul to render herself worthy of the Divine assistance during her earthly career. Besides, there may be some obligations neglected by the person who intends to gain the indulgence, owing to ignorance or forgetfulness on his part. Therefore, we have no assurance whatever that an indulgence given by us to the holy souls has had the desired effect. Considering this, we should prepare most carefully, and fulfill all obligations required for gaining an indulgence. However, let us place, with entire confidence, the application of indulgences to departed souls especially dear to us, into the tender hand of Divine mercy.
Prayer: Have mercy, O Lord, upon the suffering souls in Purgatory, mitigate the severity of Thy judgments; let the infinite merits of Thine only-begotten Son, and those of Thy saints, assist the holy souls, and deliver them from their sufferings. Through Christ, our Lord. Amen.
Special Intercession: Pray for the souls of those who neglected to gain indulgences for the souls in Purgatory.
Eternal rest, grant unto them O Lord, and let perpetual light shine upon them; may they rest in peace, Amen. (Three times)
Practice: Offer all indulgences you may gain today, for the souls in Purgatory.
Invocation: My Jesus, mercy!