WE RELATE FROM the Ṣaḥīḥs of al-Bukhārī and Muslim that Abū Hurayrah 
reported that the Messenger of Allah 
said: “Our Lord comes down to the lowest Heaven in the last third of every night and says: ‘Who will supplicate to Me, that I may answer his prayer? Who will ask of Me, that I may give to him? Who will ask Me for forgiveness, that I may forgive him?’”256 According to a narration in Muslim he said: “Every night, Allah 
comes down to the earthly Heaven when the first third of the night has passed and says: ‘I am the King, I am the King. Who will supplicate to Me, that I may answer his prayer? Who will ask of Me, that I may give to him? Who will ask Me for forgiveness, that I may forgive him?’ He continues to do this until the break of dawn.” According to another report he said: “When half the night or two-thirds of the night has passed.” [1].
reported that the Messenger of Allah said: “Our Lord comes down to the lowest Heaven in the last third of every night and says: ‘Who will supplicate to Me, that I may answer his prayer? Who will ask of Me, that I may give to him? Who will ask Me for forgiveness, that I may forgive him?’”256 According to a narration in Muslim he said: “Every night, Allah comes down to the earthly Heaven when the first third of the night has passed and says: ‘I am the King, I am the King. Who will supplicate to Me, that I may answer his prayer? Who will ask of Me, that I may give to him? Who will ask Me for forgiveness, that I may forgive him?’ He continues to do this until the break of dawn.” According to another report he said: “When half the night or two-thirds of the night has passed.” [1].And we relate from the Sunans of Abū Dāwūd and at-Tirmidhī from ‘Amr ibn ‘Abasah who reported that he heard the Prophet say: “The closest that the Lord comes to His servants is during the last part of the night. So if you are able to be among those who remember Allah at that time, do so.” [2].At-Tirmidhī classes this hadith as ḥasan ṣaḥīḥ.
who reported that he heard the Prophet say: “The closest that the Lord comes to His servants is during the last part of the night. So if you are able to be among those who remember Allah at that time, do so.” [2].At-Tirmidhī classes this hadith as ḥasan ṣaḥīḥ.References
[1] Al-Bukhārī (7494) and Muslim (758). Ibn Ḥajar observes that this hadith shows that the last part of the night is a meritorious time to supplicate and ask for forgiveness, and that any supplication made at that time is answered.
[2] Abū Dāwūd (875) and at-Tirmidhī (3574).