صَحِيحُ مُسْلِمٍ
Sahih Muslim 757 a
The Book of Prayer - Travellers
In the night there is an hour when supplications are answered
وَحَدَّثَنَا عُثْمَانُ بْنُ أَبِي شَيْبَةَ، حَدَّثَنَا جَرِيرٌ، عَنِ الأَعْمَشِ، عَنْ أَبِي سُفْيَانَ، عَنْ جَابِرٍ، قَالَ سَمِعْتُ النَّبِيَّ صلى الله عليه وسلم يَقُولُ إِنَّ فِي اللَّيْلِ لَسَاعَةً لاَ يُوَافِقُهَا رَجُلٌ مُسْلِمٌ يَسْأَلُ اللَّهَ خَيْرًا مِنْ أَمْرِ الدُّنْيَا وَالآخِرَةِ إِلاَّ أَعْطَاهُ إِيَّاهُ وَذَلِكَ كُلَّ لَيْلَةٍ .
Jabir said he heard Allah's Messenger (ﷺ) say: There is an hour during the night in which no Muslim individual will ask Allah for good in this world and the next without His giving it to him; and that applies to every night.
Sahih Muslim, 757 aSahihصحيح