The Messenger of Allah ﷺ said, "Allah has one hundred mercies. From one of them, creation shows mercy to one another, and ninety-nine are reserved for the Day of Resurrection."
حدثني الحكم بن موسى حدثنا معاذ بن معاذ حدثنا سليمان التيمي حدثنا أبو عثمان النهدي
قال رسول الله ﷺ إن لله مائة رحمة فمنها رحمة بها يتراحم الخلق بينهم وتسعة وتسعون ليوم القيامة
Muslim also related the hadith of Abu Muawiya, from Dawud, from Abu Uthman, from Salman, from the Prophet, peace and blessings be upon him and his family, "Allah created a hundred mercies." End of quote. Other than Abu Muawiya, narrators stop it as the saying of Dawud without attributing it to the Prophet.