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كتاب التوحيد
97
Oneness, Uniqueness of Allah (Tawheed)
(35)
Chapter: “…They want to change Allah’s Words….”
(35)

Narrated Abu Huraira:

Allah's Messenger (ﷺ) said, "Every night when it is the last third of the night, our Lord, the Superior, the Blessed, descends to the nearest heaven and says: Is there anyone to invoke Me that I may respond to his invocation? Is there anyone to ask Me so that I may grant him his request? Is there anyone asking My forgiveness so that I may forgive him?. " (See Hadith No. 246,Vol. 2)

حَدَّثَنَا إِسْمَاعِيلُ، حَدَّثَنِي مَالِكٌ، عَنِ ابْنِ شِهَابٍ، عَنْ أَبِي عَبْدِ اللَّهِ الأَغَرِّ، عَنْ أَبِي هُرَيْرَةَ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ ‏ "‏ يَتَنَزَّلُ رَبُّنَا تَبَارَكَ وَتَعَالَى كُلَّ لَيْلَةٍ إِلَى السَّمَاءِ الدُّنْيَا حِينَ يَبْقَى ثُلُثُ اللَّيْلِ الآخِرُ فَيَقُولُ مَنْ يَدْعُونِي فَأَسْتَجِيبَ لَهُ، مَنْ يَسْأَلُنِي فَأُعْطِيَهُ، مَنْ يَسْتَغْفِرُنِي فَأَغْفِرَ لَهُ ‏"‏‏.‏
Reference : Sahih al-Bukhari 7494
In-book reference : Book 97, Hadith 120
USC-MSA web (English) reference : Vol. 9, Book 93, Hadith 586
  (deprecated numbering scheme)