(4) باب فِي سَعَةِ رَحْمَةِ اللَّهِ تَعَالَى وَأَنَّهَا سَبَقَتْ غَضَبَهُ
Salman Farisi reported Allah's Messenger (ﷺ) as saying:
Verily, there are one hundred (parts of) mercy for Allah, and it is one part of this mercy by virtue of which there is mutual love between the people and ninety-nine reserved for the Day of Resurrection.
Reference: Sahih Muslim 2753 a
In-book reference: Book 50, Hadith 23
USC-MSA web (English) reference(deprecated numbering scheme): Book 37, Hadith 6632