(4) باب فِي سَعَةِ رَحْمَةِ اللَّهِ تَعَالَى وَأَنَّهَا سَبَقَتْ غَضَبَهُ
Abu Huraira reported that Allah's Messenger (ﷺ) said:
When Allah created the creation as He was upon the Throne, He put down in His Book: Verily, My mercy predominates My wrath.
Reference: Sahih Muslim 2751 a
In-book reference: Book 50, Hadith 17
USC-MSA web (English) reference(deprecated numbering scheme): Book 37, Hadith 6626