Sahih al-Bukhari 3194
Sahih al-Bukhari · Book 59: Beginning of Creation · The Statement of Allah Taa'la: "And He it is Who originates the creation; then will repeat it and this is easier for Him..."
Narrated Abu Huraira:
حَدَّثَنَا قُتَيْبَةُ بْنُ سَعِيدٍ ، حَدَّثَنَا مُغِيرَةُ بْنُ عَبْدِ الرَّحْمَنِ الْقُرَشِيُّ ، عَنْ أَبِي الزِّنَادِ ، عَنِ الأَعْرَجِ ، عَنْ أَبِي هُرَيْرَةَ ـ رضى الله عنه ـ قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " لَمَّا قَضَى اللَّهُ الْخَلْقَ كَتَبَ فِي كِتَابِهِ، فَهْوَ عِنْدَهُ فَوْقَ الْعَرْشِ إِنَّ رَحْمَتِي غَلَبَتْ غَضَبِي " .
Allah's Messenger (ﷺ) said, "When Allah completed the creation, He wrote in His Book which is with Him on His Throne, "My Mercy overpowers My Anger."