Sunan Ibn Majah, Volume 2, Book 5, Hadith 1366 (DarusSalam) ⓘ
It was narrated from Abu Hurairah that the Messenger of Allah said: “Our Lord, the Blessed and Exalted, descends when one third of the night remains, every night and He says: ‘Who will ask of Me, that I may give him? Who will call upon Me, that I may answer him? Who will ask My forgiveness, that I may forgive him?’ until dawn comes.” Hence they used to prefer voluntary prayers at the end of the night rather than at the beginning.
حَدَّثَنَا أَبُو مَرْوَانَ، مُحَمَّدُ بْنُ عُثْمَانَ الْعُثْمَانِيُّ وَيَعْقُوبُ بْنُ حُمَيْدِ بْنِ كَاسِبٍ قَالاَ حَدَّثَنَا إِبْرَاهِيمُ بْنُ سَعْدٍ، عَنِ ابْنِ شِهَابٍ، عَنْ أَبِي سَلَمَةَ، وَأَبِي عَبْدِ اللَّهِ الأَغَرِّ، عَنْ أَبِي هُرَيْرَةَ، أَنَّ رَسُولَ اللَّهِ ـ صلى الله عليه وسلم ـ قَالَ " يَنْزِلُ رَبُّنَا تَبَارَكَ وَتَعَالَى حِينَ يَبْقَى ثُلُثُ اللَّيْلِ الآخِرُ كُلَّ لَيْلَةٍ فَيَقُولُ مَنْ يَسْأَلُنِي فَأُعْطِيَهُ مَنْ يَدْعُونِي فَأَسْتَجِيبَ لَهُ مَنْ يَسْتَغْفِرُنِي فَأَغْفِرَ لَهُ حَتَّى يَطْلُعَ الْفَجْرُ " . فَلِذَلِكَ كَانُوا يَسْتَحِبُّونَ صَلاَةَ آخِرِ اللَّيْلِ عَلَى أَوَّلِهِ .
also referenced under: Hadith 1366 (Reference) & Book 5, Hadith 1428 (In-Book)