The Book of Repentance
Ṣaḥīḥ Muslim 6975
إِنَّ لِلَّهِ مِائَةَ رَحْمَةٍ فَمِنْهَا رَحْمَةٌ بِهَا يَتَرَاحَمُ الْخَلْقُ بَيْنَهُمْ وَتِسْعَةٌ وَتِسْعُونَ لِيَوْمِ الْقِيَامَةِ
inna lillāh māʾaha raḥmatin faminhā raḥmatun bihā yatarāḥamu al-khalqu baynahum watisʿatun watisʿūna liyawmi al-qiyāmah
Transliteration generated from the Arabic vowel marks
The full narration
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
Source
Ṣaḥīḥ Muslim · 6975
Ṣaḥīḥ