Sahih al-Bukhari 2021
Book 32: Virtues of the Night of Qadr · Narrated by Ibn `Abbas
Arabic
حَدَّثَنَا مُوسَى بْنُ إِسْمَاعِيلَ، حَدَّثَنَا وُهَيْبٌ، حَدَّثَنَا أَيُّوبُ، عَنْ عِكْرِمَةَ، عَنِ ابْنِ عَبَّاسٍ ـ رضى الله عنهما ـ أَنَّ النَّبِيَّ صلى الله عليه وسلم قَالَ " الْتَمِسُوهَا فِي الْعَشْرِ الأَوَاخِرِ مِنْ رَمَضَانَ لَيْلَةَ الْقَدْرِ فِي تَاسِعَةٍ تَبْقَى، فِي سَابِعَةٍ تَبْقَى، فِي خَامِسَةٍ تَبْقَى ".
English translation
Narrated Ibn `Abbas:The Prophet (ﷺ) said, "Look for the Night of Qadr in the last ten nights of Ramadan ,' on the night when nine or seven or five nights remain out of the last ten nights of Ramadan (i.e. 21, 23, 25, respectively)
Reference: Sahih al-Bukhari 2021, Book of Virtues of the Night of Qadr. English translation by Dr. Muhammad Muhsin Khan.