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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:223 – Mujāhid b. Mūsá > ʿAbd al-Raḥman > Yaḥyá b. al-Walīd > Muḥil b. Khalīfah > Abū al-Samḥ

"I used to serve the Messenger of Allah ﷺ and when he wanted to perform Ghusl he said: 'Turn your back.' So I turned my back to him and concealed him." (Using translation from Nasāʾī 224)  

الكبرى للنسائي:٢٢٣ – أَخْبَرَنَا مُجَاهِدُ بْنُ مُوسَى قَالَ حَدَّثَنَا عَبْدُ الرَّحْمَنِ قَالَ حَدَّثَنِي يَحْيَى بْنُ الْوَلِيدِ قَالَ حَدَّثَنِي مُحِلُّ بْنُ خَلِيفَةَ قَالَ حَدَّثَنِي أَبُو السَّمْحِ قَالَ

كُنْتُ أَخْدُمُ النَّبِيَّ ﷺ فَكَانَ إِذَا أَرَادَ أَنْ يَغْتَسِلَ قَالَ «وَلِّنِي قَفَاكَ فَأُوَلِّيهِ قَفَايَ فَأَسْتُرُهُ بِهِ»  

See similar narrations below:

Collected by Nasāʾī, Ibn Mājah
nasai:224 – Mujāhid b. Mūsá > ʿAbd al-Raḥman b. Mahdī > Yaḥyá b. al-Walīd > Muḥil b. Khalīfah > Abū al-Samḥ

"I used to serve the Messenger of Allah ﷺ and when he wanted to perform Ghusl he said: 'Turn your back.' So I turned my back to him and concealed him."  

النسائي:٢٢٤ – أَخْبَرَنَا مُجَاهِدُ بْنُ مُوسَى قَالَ حَدَّثَنَا عَبْدُ الرَّحْمَنِ بْنُ مَهْدِيٍّ قَالَ حَدَّثَنِي يَحْيَى بْنُ الْوَلِيدِ قَالَ حَدَّثَنِي مُحِلُّ بْنُ خَلِيفَةَ قَالَ حَدَّثَنِي أَبُو السَّمْحِ قَالَ

كُنْتُ أَخْدُمُ رَسُولَ اللَّهِ ﷺ فَكَانَ إِذَا أَرَادَ أَنْ يَغْتَسِلَ قَالَ وَلِّنِي قَفَاكَ فَأُوَلِّيهِ قَفَاىَ فَأَسْتُرُهُ بِهِ  

ibnmajah:613 – al-ʿAbbās b. ʿAbd al-ʿAẓīm al-ʿAnbarī And ʾAbū Ḥafṣ ʿAmr b. ʿAlī al-Falāas Wamujāhid b. Mūsá > ʿAbd al-Raḥman b. Mahdī > Yaḥyá b. al-Walīd > Muḥil b. Khalīfah > Abū al-Samḥ

"I used to serve the Prophet, and when he wanted to take a bath he would say: 'Turn your back to me.' So I would turn my back and hung up a cloth, and concealed him with it."  

ابن ماجة:٦١٣ – حَدَّثَنَا الْعَبَّاسُ بْنُ عَبْدِ الْعَظِيمِ الْعَنْبَرِيُّ وَأَبُو حَفْصٍ عَمْرُو بْنُ عَلِيٍّ الْفَلاَّسُ وَمُجَاهِدُ بْنُ مُوسَى قَالُوا حَدَّثَنَا عَبْدُ الرَّحْمَنِ بْنُ مَهْدِيٍّ حَدَّثَنَا يَحْيَى بْنُ الْوَلِيدِ أَخْبَرَنِي مُحِلُّ بْنُ خَلِيفَةَ حَدَّثَنِي أَبُو السَّمْحِ قَالَ

كُنْتُ أَخْدُمُ النَّبِيَّ ﷺ فَكَانَ إِذَا أَرَادَ أَنْ يَغْتَسِلَ قَالَ وَلِّنِي فَأُوَلِّيهِ قَفَاىَ وَأَنْشُرُ الثَّوْبَ فَأَسْتُرُهُ بِهِ