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:2704 – Abū Ṣāliḥ b. Abū Ṭāhir > Jaddī Yaḥyá b. Manṣūr > Aḥmad b. Salamah

[Machine] Indeed, the Messenger of Allah, may ﷺ , used to raise his arms until his armpits could be seen when he prayed.  

البيهقي:٢٧٠٤ – وَأَخْبَرَنَا أَبُو صَالِحِ بْنُ أَبِي طَاهِرٍ أنبأ جَدِّي يَحْيَى بْنُ مَنْصُورٍ ثنا أَحْمَدُ بْنُ سَلَمَةَ ثنا قُتَيْبَةُ بْنُ سَعِيدٍ الثَّقَفِيُّ ثنا بَكْرُ بْنُ مُضَرَ فَذَكَرَهُ بِإِسْنَادٍ مِثْلِهِ

أَنَّ رَسُولَ اللهِ ﷺ كَانَ إِذَا صَلَّى فَرَّجَ بَيْنَ يَدَيْهِ حَتَّى يُرَى بَيَاضُ إِبِطَيْهِ  

رَوَاهُ الْبُخَارِيُّ وَمُسْلِمٌ جَمِيعًا عَنْ قُتَيْبَةَ

See similar narrations below:

Collected by Muslim, Nasāʾī, Aḥmad, Nasāʾī's Kubrá
muslim:495a – Qutaybah b. Saʿīd > Bakr / Ibn Muḍar > Jaʿfar b. Rabīʿah > al-Aʿraj > ʿAbdullāh b. Mālik Ibn Buḥaynah

When the Prophet ﷺ prostrated, lie spread out his arms so that the whiteness of his armpits was visible.  

مسلم:٤٩٥a – حَدَّثَنَا قُتَيْبَةُ بْنُ سَعِيدٍ حَدَّثَنَا بَكْرٌ وَهُوَ ابْنُ مُضَرَ عَنْ جَعْفَرِ بْنِ رَبِيعَةَ عَنِ الأَعْرَجِ عَنْ عَبْدِ اللَّهِ بْنِ مَالِكٍ ابْنِ بُحَيْنَةَ

أَنَّ رَسُولَ اللَّهِ ﷺ كَانَ إِذَا صَلَّى فَرَّجَ بَيْنَ يَدَيْهِ حَتَّى يَبْدُوَ بَيَاضُ إِبْطَيْهِ  

nasai:1106 – Qutaybah > Bakr > Jaʿfar b. Rabīʿah > al-Aʿraj > ʿAbdullāh b. Mālik Ibn Buḥaynah

When the Messenger of Allah ﷺ prayed he held his arms out so much that the whiteness of his armpits appeared.  

النسائي:١١٠٦ – أَخْبَرَنَا قُتَيْبَةُ قَالَ حَدَّثَنَا بَكْرٌ عَنْ جَعْفَرِ بْنِ رَبِيعَةَ عَنِ الأَعْرَجِ عَنْ عَبْدِ اللَّهِ بْنِ مَالِكِ ابْنِ بُحَيْنَةَ

أَنَّ رَسُولَ اللَّهِ ﷺ كَانَ إِذَا صَلَّى فَرَّجَ بَيْنَ يَدَيْهِ حَتَّى يَبْدُوَ بَيَاضُ إِبْطَيْهِ  

ahmad:22925 – Qutaybah b. Saʿīd > Bakr b. Muḍar > Jaʿfar b. Rabīʿah > al-Aʿraj > ʿAbdullāh b. Mālik Ibn Buḥaynah

When the Messenger of Allah ﷺ prayed he held his arms out so much that the whiteness of his armpits appeared. (Using translation from Nasāʾī 1106)  

أحمد:٢٢٩٢٥ – حَدَّثَنَا قُتَيْبَةُ بْنُ سَعِيدٍ حَدَّثَنَا بَكْرُ بْنُ مُضَرَ عَنْ جَعْفَرِ بْنِ رَبِيعَةَ عَنِ الْأَعْرَجِ عَنْ عَبْدِ اللهِ بْنِ مَالِكِ ابْنِ بُحَيْنَةَ

أَنَّ رَسُولَ اللهِ ﷺ كَانَ إِذَا صَلَّى فَرَّجَ بَيْنَ يَدَيْهِ حَتَّى يَبْدُوَ بَيَاضُ إِبْطَيْهِ  

nasai-kubra:697 – Qutaybah b. Saʿīd > Bakr > Jaʿfar b. Rabīʿah > al-Aʿraj > ʿAbdullāh b. Mālik b. Buḥaynah

When the Prophet ﷺ prostrated, lie spread out his arms so that the whiteness of his armpits was visible. (Using translation from Muslim 495a)  

الكبرى للنسائي:٦٩٧ – أَخْبَرَنَا قُتَيْبَةُ بْنُ سَعِيدٍ قَالَ حَدَّثَنَا بَكْرٌ عَنْ جَعْفَرِ بْنِ رَبِيعَةَ عَنِ الْأَعْرَجِ عَنْ عَبْدِ اللهِ بْنِ مَالِكِ بْنِ بُحَيْنَةَ

أَنَّ رَسُولَ اللهِ ﷺ كَانَ إِذَا صَلَّى فَرَّجَ بَيْنَ يَدَيْهِ حَتَّى يَبْدُو بَيَاضَ إِبِطَيْهِ