Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
bayhaqi:8579 – Abū ʿAbdullāh al-Ḥāfiẓ And ʾAbū Saʿīd b. Abū ʿAmr > Abū al-ʿAbbās Muḥammad b. Yaʿqūb > Yaḥyá b. Abū Ṭālib > ʿAbd al-Wahhāb b. ʿAṭāʾ > Saʿīd / Ibn Abū ʿArūbah > Hishām b. ʿUrwah from his father > ʿĀʾishah > Lā Āʿtikāf Illā Biṣawm Kadhā Rawāh Hishām b. ʿUrwah from his father > ʿĀʾishah Warawāh al-Zuhrī > ʿUrwah

[Machine] Aisha mentioned in a hadith, and at the end the Sunnah is for someone who observes fasting. His mention has passed in this part like this.  

البيهقي:٨٥٧٩ – أَخْبَرَنَا أَبُو عَبْدِ اللهِ الْحَافِظُ وَأَبُو سَعِيدِ بْنُ أَبِي عَمْرٍو قَالَا ثنا أَبُو الْعَبَّاسِ مُحَمَّدُ بْنُ يَعْقُوبَ ثنا يَحْيَى بْنُ أَبِي طَالِبٍ أنبأ عَبْدُ الْوَهَّابِ بْنُ عَطَاءٍ أنبأ سَعِيدٌ يَعْنِي ابْنَ أَبِي عَرُوبَةَ عَنْ هِشَامِ بْنِ عُرْوَةَ عَنْ أَبِيهِ عَنْ عَائِشَةَ ؓ أَنَّهَا قَالَتْ لَا اعْتِكَافَ إِلَّا بِصَوْمٍ كَذَا رَوَاهُ هِشَامُ بْنُ عُرْوَةَ عَنْ أَبِيهِ عَنْ عَائِشَةَ وَرَوَاهُ الزُّهْرِيُّ عَنْ عُرْوَةَ عَنْ

عَائِشَةَ فِي حَدِيثٍ ذَكَرَهُ وَفِي آخِرِهِ وَالسُّنَّةُ فِيمَنِ اعْتَكَفَ أَنْ يَصُومَ قَدْ مَضَى ذِكْرُهُ فِي هَذَا الْجُزْءِ كَذَا  

رَوَاهُ غَيْرُ وَاحِدٍ عَنِ الزُّهْرِيِّ