The Messenger of Allah ﷺ said, "Allah created one hundred mercies. He placed one of them among His creation and kept ninety-nine with Himself."
أن رسول الله ﷺ قال: خلق الله مائة رحمة، فوضع واحدة بين خلقه، وخبأ عنده مائة إلا واحدة.
Muslim narrated it in the Book of Repentance (2752:18) through multiple routes from Ismail bin Jafar, from Ala, from his father, from Abu Hurairah, and he related it.