Hadith Qudsi 1

عَنْ أَبِي هُرَيْرَةَ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ:
” لَمَّا قَضَى اللَّهُ الْخَلْقَ، كَتَبَ فِي كِتَابِهِ عَلَى نَفْسِهِ، فَهُوَ مَوْضُوعٌ عِنْدَهُ: إِنَّ رَحْمَتِي تَغْلِبُ غَضَبِي”

رواه مسلم (وكذلك البخاري والنسائي وابن ماجه)

On the authority of Abu Hurayrah (may Allah be pleased with him), who said that the Messenger of Allah (peace and blessings of Allah be upon him) said:

“When Allah decreed the Creation He pledged Himself by writing in His book which is laid down with Him: ‘My mercy prevails over my wrath.’”

[Muslim (also by al-Bukhari, an-Nasa'i and Ibn Majah)]