Looking for magisterial reference on sacrament of Confession

Where is it stated in the Catechism or other magisterial doc that a person is forgiven for even mortal sin as soon as he repents—and that then the person has the disposition to go to Confession as soon as he can to complete his repentance. I can’t seem to find. Or something to that effect I’ve heard them say on CAL before. :o

Nevermind, I’m blind. :o

1452 When it arises from a love by which God is loved above all else, contrition is called “perfect” (contrition of charity). Such contrition remits venial sins; it also obtains forgiveness of mortal sins if it includes the firm resolution to have recourse to sacramental confession as soon as possible.51

1453 The contrition called “imperfect” (or “attrition”) is also a gift of God, a prompting of the Holy Spirit. It is born of the consideration of sin’s ugliness or the fear of eternal damnation and the other penalties threatening the sinner (contrition of fear). Such a stirring of conscience can initiate an interior process which, under the prompting of grace, will be brought to completion by sacramental absolution. By itself however, imperfect contrition cannot obtain the forgiveness of grave sins, but it disposes one to obtain forgiveness in the sacrament of Penance.52

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