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:8596 – Abū ʿAbdullāh al-Ḥāfiẓ > ʿAbd al-Raḥman b. al-Ḥasan al-Qāḍī > Ibrāhīm b. al-Ḥusayn > Ādam > And Rqāʾ > Ibn Abū Najīḥ > Mujāhid

[Machine] Ibn Abbas said, "When someone observes I'tikaf, he should not engage in sexual relations with women."  

البيهقي:٨٥٩٦ – أَخْبَرَنَا أَبُو عَبْدِ اللهِ الْحَافِظُ أنبأ عَبْدُ الرَّحْمَنِ بْنُ الْحَسَنِ الْقَاضِي ثنا إِبْرَاهِيمُ بْنُ الْحُسَيْنِ ثنا آدَمُ ثنا وَرْقَاءُ عَنِ ابْنِ أَبِي نَجِيحٍ عَنْ مُجَاهِدٍ قَالَ

قَالَ ابْنُ عَبَّاسٍ إِذَا اعْتَكَفَ فَلَا يجَامِعُ النِّسَاءَ