عَنْ عَائِشَةَ رَضِيَ اللّهُ عَنْهَا: أَنَّ النَّبِيَّ صَلَّى اللّهُ عَلَيْهِ وَسَلَّمَ كَانَ يَعْتَكِفُ الْعَشْرَ الْأَوَاخِرَ مِنْ رَمَضَانَ حَتَّى تَوَفَّاهُ اللّهُ، ثُمَّ اعْتَكَفَ أَزْوَاجُهُ بَعْدَهُ. مُتَّفَقٌ عَلَيْهِ.
Aisha (may Allah be pleased with her) reported that the Prophet (peace and blessings be upon him) used to observe i'tikaf during the last ten days of Ramadan until Allah took him, and then his wives observed i'tikaf after him. Agreed upon (al-Bukhari and Muslim).
الدروس · lessons
جواز اعتكاف النساء. أنّ النّبيّ صَلَّى اللّهُ عليه وَسَلَّمَ كان حريصا على سنّة الاعتكاف حتى توفاه اللّه عزّ وجلّ. وفي هذا دلالة على أنّه سنّة مؤكدة. كان صَلَّى اللّهُ عليه وَسَلَّمَ يأمر بخباء "على مثل هيئة الخيمة" فيضرب له في المسجد، فيمكث فيه، يخلو فيه عن الناس، ويقبل على ربه تبارك وتعالى، حتى تتم له الخلوة بصورة واقعية.
The permissibility of women observing i'tikaf. The Prophet (peace and blessings be upon him) was keen on the Sunnah of i'tikaf until Allah (the Mighty and Majestic) took him. In this there is an indication that it is an emphasized Sunnah. He (peace and blessings be upon him) used to order a tent-like enclosure to be pitched for him in the mosque, where he would stay, secluding himself from people and turning to his Lord (Blessed and Exalted is He), so that his seclusion would be complete in a real sense.