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
nasai-kubra:8946 – Muḥammad b. Bashhār > ʿAbd al-Raḥman > Sufyān > ʿAbdullāh b. Shaddād al-Aʿraj > a man > Khuzaymah b. Thābit

[Machine] On the authority of the Prophet ﷺ , he said, "Approaching women from their backs is forbidden."  

الكبرى للنسائي:٨٩٤٦ – أَخْبَرَنَا مُحَمَّدُ بْنُ بَشَّارٍ قَالَ حَدَّثَنَا عَبْدُ الرَّحْمَنِ قَالَ حَدَّثَنَا سُفْيَانُ عَنْ عَبْدِ اللهِ بْنِ شَدَّادٍ الْأَعْرَجِ عَنْ رَجُلٍ عَنْ خُزَيْمَةَ بْنِ ثَابِتٍ

عَنِ النَّبِيِّ ﷺ قَالَ «إِتْيَانُ النِّسَاءِ فِي أَدْبَارِهِنَّ حَرَامٌ»  

See similar narrations below:

Collected by Nasāʾī's Kubrá, Suyūṭī
nasai-kubra:8959 – Saʿīd b. Yaʿqūb al-Ṭālqānī > ʿUthmān b. al-Yamān > Zamʿah b. Ṣāliḥ > Ibn Ṭāwus from his father > Ibn al-Hād > ʿUmar b. al-Khaṭṭāb

[Machine] On the authority of the Prophet Muhammad ﷺ , he said, "Do not approach women from behind."  

الكبرى للنسائي:٨٩٥٩ – أَخْبَرَنَا سَعِيدُ بْنُ يَعْقُوبَ الطَّالْقَانِيُّ قَالَ حَدَّثَنَا عُثْمَانُ بْنُ الْيَمَانِ عَنْ زَمْعَةَ بْنِ صَالِحٍ عَنِ ابْنِ طَاوُسٍ عَنْ أَبِيهِ عَنِ ابْنِ الْهَادِ عَنْ عُمَرَ بْنِ الْخَطَّابِ

عَنِ النَّبِيِّ ﷺ قَالَ «لَا تَأْتُوا النِّسَاءَ فِي أَدْبَارِهِنَّ»