كتاب التوبة
50  
The Book of Repentance
(4)
Chapter: The Vastaess Of Allah's Mercy, Which Prevails Over His Wrath
(4)
باب فِي سَعَةِ رَحْمَةِ اللَّهِ تَعَالَى وَأَنَّهَا سَبَقَتْ غَضَبَهُ ‏‏
Sahih Muslim 2753 b

This hadith has been transmitted on the authority of Mu'tamir, reported on the authority of his father.

وَحَدَّثَنَاهُ مُحَمَّدُ بْنُ عَبْدِ الأَعْلَى، حَدَّثَنَا الْمُعْتَمِرُ، عَنْ أَبِيهِ، بِهَذَا الإِسْنَادِ ‏.‏
Reference : Sahih Muslim 2753b
In-book reference : Book 50, Hadith 24
USC-MSA web (English) reference : Book 37, Hadith 6633
  (deprecated numbering scheme)