وَعَنْ أَنَسٍ قَالَ: كُنْتُ جَالِسًا مَعَ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فِي الْمَسْجِدِ وَرَجُلٌ يُصَلِّي فَقَالَ: اللَّهُمَّ إِنِّي أَسْأَلُكَ بِأَنَّ لَكَ الْحَمْدَ لَا إِلَهَ إِلَّا أَنْتَ الْحَنَّانُ الْمَنَّانُ بَدِيعُ السَّمَاوَاتِ وَالْأَرْضِ يَا ذَا الْجَلَالِ وَالْإِكْرَامِ يَا حَيُّ يَا قَيُّومُ أَسْأَلُكَ فَقَالَ النَّبِيُّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «دَعَا اللَّهَ بِاسْمِهِ الْأَعْظَمِ الَّذِي إِذَا دُعِيَ بِهِ أَجَابَ وَإِذَا سُئِلَ بِهِ أَعْطَى» . رَوَاهُ التِّرْمِذِيُّ وَأَبُو دَاوُدَ وَالنَّسَائِيُّ وَابْنُ مَاجَهْ

Anas said that when he was sitting with the Prophet in the mosque a man who was praying said, “O God, I ask Thee by virtue of the fact that praise is due to Thee than whom there is no god, who showest favour and beneficence, the Originator of the heavens and the earth, O Lord of Majesty and Splendour, O Living One; O Eternal One, I ask of Thee.” The Prophet then said, “He has supplicated God using His greatest name, when supplicated by which He answers and when asked by which He gives.” Tirmidhi, Abu Dawud, Nasa’i and Ibn Majah transmitted it.