رِيَاضُ الصَّالِحِينَ
Riyad as-Salihin 1269
The Book of I'tikaf
I'tikaf (Seclusion in the Mosque) in the Month of Ramadan
وَعَنْ عَائِشَةَ رَضِيَ اللَّهُ عَنْهَا أَنَّ النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ كَانَ يَعْتَكِفُ الْعَشْرَ الأَوَاخِرَ مِنْ رَمَضَانَ، حَتَّى تَوَفَّاهُ اللَّهُ، تَعَالَى ثُمَّ اعْتَكَفَ أَزْوَاجُهُ مِنْ بَعْدِهِ. ((مُتَّفَقٌ عَلَيْهِ))
'Aishah (May Allah be pleased with her) reported: The Prophet (ﷺ) used to engage himself in I'tikaf (seclusion for prayers) in the mosque during the last ten nights of Ramadan till he passed away; thereafter, his wives followed this practice after him. [Al- Bukhari and Muslim].
Riyad as-Salihin, 1269