Ibn 'Umar (Allah be pleased with both of them) reported that the Messenger of Allah ﷺ used to observe i'tikaf in the last ten days of Ramadan.  

أَنَّ النَّبِيَّ ﷺ كَانَ يَعْتَكِفُ فِي الْعَشْرِ الأَوَاخِرِ مِنْ رَمَضَانَ  

Abdullah (Allah be pleased with him) showed me the place in the mosque where the Messenger of Allah ﷺ used to observe i'tikaf.  

أَنَّ رَسُولَ اللَّهِ ﷺ كَانَ يَعْتَكِفُ الْعَشْرَ الأَوَاخِرَ مِنْ رَمَضَانَ قَالَ نَافِعٌ وَقَدْ أَرَانِي عَبْدُ اللَّهِ ؓ الْمَكَانَ الَّذِي كَانَ يَعْتَكِفُ فِيهِ رَسُولُ اللَّهِ ﷺ مِنَ الْمَسْجِدِ  

'A'isha (Allah be pleased with her) reported that the Messenger of Allah ﷺ used to observe i'tikaf in the last ten days of Ramadan.  

كَانَ رَسُولُ اللَّهِ ﷺ يَعْتَكِفُ الْعَشْرَ الأَوَاخِرَ مِنْ رَمَضَانَ  

This hadith has been narrated by 'A'isha (Allah be pleased with her) through another chain of transmitters.  

كَانَ رَسُولُ اللَّهِ ﷺ يَعْتَكِفُ الْعَشْرَ الأَوَاخِرَ مِنْ رَمَضَانَ  

'A'isha (Allah be pleased with her) reported that the Messenger of Allah (may peace he upon him) used to observe i'tikif in the last ten days of Ramadan till Allah called him back (to his heavenly home). Then his wives observed i'tikaf after him.  

أَنَّ النَّبِيَّ ﷺ كَانَ يَعْتَكِفُ الْعَشْرَ الأَوَاخِرَ مِنْ رَمَضَانَ حَتَّى تَوَفَّاهُ اللَّهُ ﷻ ثُمَّ اعْتَكَفَ أَزْوَاجُهُ مِنْ بَعْدِهِ