Hadith on Mercy: Allah’s Mercy prevails over His Wrath

Abu Huraira reported: The Messenger of Allah صلى الله عليه وسلم said: “When Allah decreed the creation, He wrote in His Book which is with Him on His Throne: My Mercy prevails over My Wrath.”
[Sahih Bukhari, Volume 4, Book 54, Number 416]
Book of the Beginning of Creation

عَنْ أَبِي هُرَيْرَةَ رَضِيَ اللَّهُ عَنْهُ قَالَ  قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ لَمَّا قَضَى اللَّهُ الْخَلْقَ كَتَبَ فِي كِتَابِهِ فَهُوَ عِنْدَهُ فَوْقَ الْعَرْشِ إِنَّ رَحْمَتِي غَلَبَتْ غَضَبِي

كِتَاب بَدْءِ الْخَلْقِ – يشتمني ابن آدم وما ينبغي له أن يشتمني ويكذبني وما ينبغي له