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:8305 – Abū al-Ḥasan Muḥammad b. al-Ḥusayn al-ʿAlawī > Abū Ḥāmid b. al-Sharqī > Aḥmad b. Muḥammad b. al-Ṣabbāḥ > Shabābah b. Sawwār > Hishām b. al-Ghāz And ʾAbū ʿAmr b. al-ʿAlāʾ > Nāfiʿ > Ibn ʿUmar

[Machine] He used to perform Itikaf during the month of Ramadan at the time of breaking the fast.  

البيهقي:٨٣٠٥ – أَخْبَرَنَا أَبُو الْحَسَنِ مُحَمَّدُ بْنُ الْحُسَيْنِ الْعَلَوِيُّ أنبأ أَبُو حَامِدِ بْنُ الشَّرْقِيِّ ثنا أَحْمَدُ بْنُ مُحَمَّدِ بْنِ الصَّبَّاحِ ثنا شَبَابَةُ بْنُ سَوَّارٍ ثنا هِشَامُ بْنُ الْغَازِ وَأَبُو عَمْرِو بْنُ الْعَلَاءِ جَمِيعًا عَنْ نَافِعٍ عَنِ ابْنِ عُمَرَ ؓ

أَنَّهُ كَانَ يَحْتَجِمُ فِي شَهْرِ رَمَضَانَ عِنْدَ وَقْتِ الْفِطْرِ