Sahih al-Bukhari 2034
Sahih al-Bukhari · Book 33: Retiring to a Mosque for Remembrance of Allah (I'tikaf) · Tents in mosque.
Narrated `Aisha:
حَدَّثَنَا عَبْدُ اللَّهِ بْنُ يُوسُفَ ، أَخْبَرَنَا مَالِكٌ ، عَنْ يَحْيَى بْنِ سَعِيدٍ ، عَنْ عَمْرَةَ بِنْتِ عَبْدِ الرَّحْمَنِ ، عَنْ عَائِشَةَ ـ رضى الله عنها ـ أَنَّ النَّبِيَّ صلى الله عليه وسلم أَرَادَ أَنْ يَعْتَكِفَ، فَلَمَّا انْصَرَفَ إِلَى الْمَكَانِ الَّذِي أَرَادَ أَنْ يَعْتَكِفَ إِذَا أَخْبِيَةٌ خِبَاءُ عَائِشَةَ، وَخِبَاءُ حَفْصَةَ، وَخِبَاءُ زَيْنَبَ، فَقَالَ " آلْبِرَّ تَقُولُونَ بِهِنَّ ". ثُمَّ انْصَرَفَ، فَلَمْ يَعْتَكِفْ، حَتَّى اعْتَكَفَ عَشْرًا مِنْ شَوَّالٍ.
The Prophet (ﷺ) intended to practice I`tikaf and when he reached the place where he intended to perform I`tikaf, he saw some tents, the tents of `Aisha, Hafsa and Zainab. So, he said, "Do you consider that they intended to do righteousness by doing this?" And then he went away and did not perform I`tikaf (in Ramadan) but performed it in the month of Shawwal for ten days.