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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
bayhaqi:3111 – Abū ʿAbdullāh al-Ḥāfiẓ > Abū Bakr Muḥammad b. Aḥmad b. Bālawayh > Aḥmad b. Bishr al-Marthadī > ʿAlī b. al-Jaʿd > Shuʿbah > al-Ḥusayn b. ʿAlī al-Dārimī > Muḥammad b. Isḥāq > Ibn Khuzaymah > Muḥammad b. Bashhār > Muḥammad b. Jaʿfar > Shuʿbah > Ḥammād > Ibrāhīm > al-Aswad

[Machine] I prayed behind Umar ibn Al-Khattab in travel and residence, and he used to only exhibit devotion in the Fajr prayer.  

البيهقي:٣١١١ – وَأَخْبَرَنَا أَبُو عَبْدِ اللهِ الْحَافِظُ أنبأ أَبُو بَكْرٍ مُحَمَّدُ بْنُ أَحْمَدَ بْنِ بَالَوَيْهِ ثنا أَحْمَدُ بْنُ بِشْرٍ الْمَرْثَدِيُّ ثنا عَلِيُّ بْنُ الْجَعْدِ أنبأ شُعْبَةُ قَالَ وَأَخْبَرَنِي الْحُسَيْنُ بْنُ عَلِيٍّ الدَّارِمِيُّ ثنا مُحَمَّدُ بْنُ إِسْحَاقَ هُوَ ابْنُ خُزَيْمَةَ ثنا مُحَمَّدُ بْنُ بَشَّارٍ ثنا مُحَمَّدُ بْنُ جَعْفَرٍ ثنا شُعْبَةُ عَنْ حَمَّادٍ عَنْ إِبْرَاهِيمَ عَنِ الْأَسْوَدِ قَالَ

صَلَّيْتُ خَلْفَ عُمَرَ بْنِ الْخَطَّابِ ؓ فِي السَّفَرِ وَالْحَضَرِ فَمَا كَانَ يَقْنُتُ إِلَّا فِي صَلَاةِ الْفَجْرِ  

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Collected by Suyūṭī
suyuti:2-1564b – al-Aswad
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السيوطي:٢-١٥٦٤b –

"عَنِ الأَسْوَدِ قالَ: صَلَّيْتُ خَلْفَ عمرَ بنِ الخطَّابِ فِى السَّفَرِ والْحَضَرِ وَكَانَ يَقْنُتُ فِى الرَّكْعَةِ الثَّانِيَةِ مِنْ صَلَاةِ الْفَجْرِ، وَلَا يَقْنُتُ فِى سَائِرِ صَلَاتِهِ".  

[ق] البيهقى في السنن