Hadith 13
Abu Huraira reported: The Messenger of Allah, peace and blessings be upon him, said:
يَنْزِلُ رَبُّنَا كُلَّ لَيْلَةٍ إِلَى السَّمَاءِ الدُّنْيَا حِينَ يَبْقَى ثُلُثُ اللَّيْلِ الْآخِرُ فَيَقُولُ مَنْ يَدْعُونِي فَأَسْتَجِيبَ لَهُ وَمَنْ يَسْأَلُنِي فَأُعْطِيَهُ وَمَنْ يَسْتَغْفِرُنِي فَأَغْفِرَ لَهُ
Our Lord Almighty descends to the lowest heaven in the last third of every night, saying: Who is calling upon Me that I may answer him? Who is asking from Me that I may give him? Who is seeking My forgiveness that I may forgive him?
Source: Ṣaḥīḥ al-Bukhārī 1145, Grade: Muttafaqun Alayhi