Sahih Muslim , Book 4, Hadith 1655 (USC-MSA) ⓘ
Jabir reported: I heard the Messenger of Allah as saying: There is an hour during the night in which no Muslim bondman will ask Allah for good in this world and the next but He will grant it to him.
وَحَدَّثَنِي سَلَمَةُ بْنُ شَبِيبٍ، حَدَّثَنَا الْحَسَنُ بْنُ أَعْيَنَ، حَدَّثَنَا مَعْقِلٌ، عَنْ أَبِي الزُّبَيْرِ، عَنْ جَابِرٍ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ " إِنَّ مِنَ اللَّيْلِ سَاعَةً لاَ يُوَافِقُهَا عَبْدٌ مُسْلِمٌ يَسْأَلُ اللَّهَ خَيْرًا إِلاَّ أَعْطَاهُ إِيَّاهُ " .
also referenced under: Book 6, Hadith 200 (In-Book) & Hadith 757 (Reference)