“Verily, Allah when He created the creation, He wrote with His Hand concerning Himself, that: ‘My mercy prevails over My wrath.’”  

عَنْ رَسُولِ اللَّهِ ﷺ قَالَ إِنَّ اللَّهَ حِينَ خَلَقَ الْخَلْقَ كَتَبَ بِيَدِهِ عَلَى نَفْسِهِ إِنَّ رَحْمَتِي تَغْلِبُ غَضَبِي  

The Prophet ﷺ entered the Masjid and there was a man who had performed Salat and was supplicating. He was saying in his supplication: “O Allah, none has the right to be worshipped but Allah, You are the One Who gives blessings, Originator of the heavens and the earth, Possessor of glory and generosity (Allāhumma lā ilāha illā ant, al-Mannān, Badīʿus-samāwāti wal-arḍ, Dhal-Jalāli wal Ikrām).” So the Prophet ﷺ said: “Do you know what he has supplicated Allah with? He has supplicated to Allah by His Greatest Name, the one which if He Is called upon by it, He responds, and when He is asked by it, He gives.”  

دَخَلَ النَّبِيُّ ﷺ الْمَسْجِدَ وَرَجُلٌ قَدْ صَلَّى وَهُوَ يَدْعُو وَيَقُولُ فِي دُعَائِهِ اللَّهُمَّ لاَ إِلَهَ إِلاَّ أَنْتَ الْمَنَّانُ بَدِيعُ السَّمَوَاتِ وَالأَرْضِ ذَا الْجَلاَلِ وَالإِكْرَامِ فَقَالَ النَّبِيُّ ﷺ تَدْرُونَ بِمَ دَعَا اللَّهَ دَعَا اللَّهَ بِاسْمِهِ الأَعْظَمِ الَّذِي إِذَا دُعِيَ بِهِ أَجَابَ وَإِذَا سُئِلَ بِهِ أَعْطَى