Salman Farsi reported,

The Messenger of Allah ﷺ said, "Allah has a hundred mercies. One of them is the mercy by which creatures show compassion to one another, and ninety-nine are reserved for the Day of Resurrection."

Muslim 6976

Sahih

و حدثناه محمد بن عبد الأعلى حدثنا المعتمر عن أبيه بهذا الإسناد

مسلم 6976صحيح
Contents
Reference
Commentary
Ayat
Collection
Sahih Muslim
Book
Tawba
Chapter
Vastness of Allah's mercy and that it precedes His wrath
Numbering
Darussalam 6976
Muslim 6976