Sunan Ibn Majah 189
سنن ابن ماجه#189SahihIt was narrated that Abu Hurairah said:"The Messenger of Allah said: 'Your Lord wrote for Himself with His Own Hand before He created the creation: "My mercy precedes My wrath
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniHasan Sahih
Muhammad Fouad Abd al-BaqiHasan Sahih
Zubair Ali ZaiIsnaad Sahih