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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:4790 – Abū ʿAbdullāh al-Ḥāfiẓ And ʾAbū Bakr Aḥmad b. al-Ḥasan al-Qāḍī > Abū al-ʿAbbās Muḥammad b. Yaʿqūb > Aḥmad b. ʿĪsá al-Tinnīsī > ʿAmr b. Abū Salamah > al-Awzāʿī > al-Muṭṭalib b. ʿAbdullāh al-Makhzūmī > Utī ʿAbdullāh b. ʿUmar Birajul > Kayf Ūtir > Awtir Biwāḥidah > Innī Akhshá > al-Nās Innahā al-Butayrāʾ

“How should I perform Witr?” He said: “Pray Witr with one Rak’ah.” He said: “I am afraid that the people will say that I am cutting the prayer short.” He said: “The Sunnah of Allah and His Messenger.” Meaning “This is the Sunnah of Allah and His Messenger.” (Using translation from Ibn Mājah 1176)   

البيهقي:٤٧٩٠ – أَخْبَرَنَا أَبُو عَبْدِ اللهِ الْحَافِظُ وَأَبُو بَكْرٍ أَحْمَدُ بْنُ الْحَسَنِ الْقَاضِي قَالَا ثنا أَبُو الْعَبَّاسِ مُحَمَّدُ بْنُ يَعْقُوبَ ثنا أَحْمَدُ بْنُ عِيسَى التِّنِّيسِيُّ ثنا عَمْرُو بْنُ أَبِي سَلَمَةَ عَنِ الْأَوْزَاعِيِّ حَدَّثَنِي الْمُطَّلِبُ بْنُ عَبْدِ اللهِ الْمَخْزُومِيُّ قَالَ أُتِيَ عَبْدُ اللهِ بْنُ عُمَرَ بِرَجُلٍ فَقَالَ كَيْفَ أُوتِرُ؟ قَالَ أَوْتِرْ بِوَاحِدَةٍ قَالَ إِنِّي أَخْشَى أَنْ يَقُولَ النَّاسُ إِنَّهَا الْبُتَيْرَاءُ قَالَ

قَالَ أَسُنَّةُ اللهِ وَرَسُولِهِ تُرِيدُ؟ هَذِهِ سُنَّةُ اللهِ وَرَسُولِهِ  

See similar narrations below:

Collected by Ibn Mājah, Ṭabarānī
ibnmajah:1176 – ʿAbd al-Raḥman b. Ibrāhīm al-Dimashqī > al-Walīd b. Muslim > al-Awzāʿī > al-Muṭṭalib b. ʿAbdullāh

“How should I perform Witr?” He said: “Pray Witr with one Rak’ah.” He said: “I am afraid that the people will say that I am cutting the prayer short.” He said: “The Sunnah of Allah and His Messenger.” Meaning “This is the Sunnah of Allah and His Messenger.”  

ابن ماجة:١١٧٦ – حَدَّثَنَا عَبْدُ الرَّحْمَنِ بْنُ إِبْرَاهِيمَ الدِّمَشْقِيُّ حَدَّثَنَا الْوَلِيدُ بْنُ مُسْلِمٍ حَدَّثَنَا الأَوْزَاعِيُّ حَدَّثَنَا الْمُطَّلِبُ بْنُ عَبْدِ اللَّهِ قَالَ سَأَلَ ابْنَ عُمَرَ رَجُلٌ فَقَالَ كَيْفَ أُوتِرُ قَالَ أَوْتِرْ بِوَاحِدَةٍ قَالَ إِنِّي أَخْشَى أَنْ يَقُولَ النَّاسُ الْبُتَيْرَاءُ فَقَالَ

سُنَّةُ اللَّهِ وَرَسُولِهِ يُرِيدُ هَذِهِ سُنَّةُ اللَّهِ وَرَسُولِهِ ﷺ  

tabarani:13431 – Abū Shuʿayb al-Ḥarrānī > Yaḥyá b. ʿAbdullāh al-Bābluttī > al-Awzāʿī > al-Muṭṭalib b. ʿAbdullāh b. Ḥanṭab

[Machine] "The Sunnah of Allah and the Sunnah of His Messenger, this refers to the Sunnah of Allah and the Sunnah of His Messenger ﷺ ."  

الطبراني:١٣٤٣١ – حَدَّثَنَا أَبُو شُعَيْبٍ الْحَرَّانِيُّ ثنا يَحْيَى بْنُ عَبْدِ اللهِ الْبَابْلُتِّيُّ ثنا الْأَوْزَاعِيُّ عَنِ الْمُطَّلِبِ بْنِ عَبْدِ اللهِ بْنِ حَنْطَبٍ قَالَ سَأَلَ رَجُلٌ ابْنَ عُمَرَ §عَنِ الْوِتْرِ فَقَالَ «أَوْتِرْ بِوَاحِدَةٍ» فَقَالَ الرَّجُلُ إِنِّي أَخْشَى أَنْ يَقُولَ النَّاسُ إِنَّهَا بُتَيْرَاءُ قَالَ

«سُنَّةُ اللهِ وَسُنَّةُ رَسُولِهِ يُرِيدُ هَذِهِ سُنَّةُ اللهِ وَسُنَّةُ رَسُولِهِ ﷺ»