رِيَاضُ الصَّالِحِينَ
Riyad as-Salihin 1191
The Book of Virtues
The Superiority of Lailat-ul-Qadr (the Night of Decree)
وَعَنْ عَائِشَةَ رَضِيَ اللَّهُ عَنْهَا، قَالَتْ: كَانَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ يُجَاوِرُ فِي الْعَشْرِ الأَوَاخِرِ مِنْ رَمَضَانَ، وَيَقُولُ: تَحَرَّوْا لَيْلَةَ الْقَدْرِ فِي الْعَشْرِ الأَوَاخِرِ مِنْ رَمَضَانَ ((مُتَّفَقٌ عَلَيْهِ)) .
'Aishah (May Allah be pleased with her) reported: The Messenger of Allah (ﷺ) used to seclude himself (in the mosque) during the last ten nights of Ramadan. He would say, "Search for Lailat-ul-Qadr (Night of Decree) in the last ten nights of Ramadan." [Al-Bukhari and Muslim].
Riyad as-Salihin, 1191