كتاب البر والصلة والآداب
45  
The Book of Virtue, Enjoining Good Manners, and Joining of the Ties of Kinship
(25)
Chapter: Whomever Is Cursed, Reviled Or Prayed Against By The Prophet (SAW) When He Does Not Deserve That, It Will Be Purification, Reward And Mercy For Him
(25)
باب مَنْ لَعَنَهُ النَّبِيُّ صلى الله عليه وسلم أَوْ سَبَّهُ أَوْ دَعَا عَلَيْهِ
Sahih Muslim 2601 f

Abu Huraira reported that he heard Allah's Messenger (ﷺ) as saying:

O Allah, for any believing servant whom I curse make that as a source of nearness to Thee on the Day of Resurrection.
حَدَّثَنِي حَرْمَلَةُ بْنُ يَحْيَى، أَخْبَرَنَا ابْنُ وَهْبٍ، أَخْبَرَنِي يُونُسُ، عَنِ ابْنِ شِهَابٍ، أَخْبَرَنِي سَعِيدُ بْنُ الْمُسَيَّبِ، عَنْ أَبِي هُرَيْرَةَ، أَنَّهُ سَمِعَ رَسُولَ اللَّهِ صلى الله عليه وسلم يَقُولُ ‏ "‏ اللَّهُمَّ فَأَيُّمَا عَبْدٍ مُؤْمِنٍ سَبَبْتُهُ فَاجْعَلْ ذَلِكَ لَهُ قُرْبَةً إِلَيْكَ يَوْمَ الْقِيَامَةِ ‏"‏ ‏.‏
Reference : Sahih Muslim 2601f
In-book reference : Book 45, Hadith 121
USC-MSA web (English) reference : Book 32, Hadith 6294
  (deprecated numbering scheme)