The Messenger of Allah ﷺ said, "Allah created mercy in one hundred parts. He placed one part among His creation and kept ninety-nine parts with Himself."
Azami 8263
Sahih
عن أبي هريرة قال
قال رسول الله ﷺ: خلق الله مائة رحمة، فوضع واحدة بين خلقه، وخبأ عنده مائة إلا واحدة.
Muslim reported it in the Book of Repentance (2752:18) through multiple routes, from Ismail bin Jafar, from Ala, from his father, from Abu Hurairah, who narrated it.