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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
hakim:1133 – Muḥammad b. Khālid b. Khalī > Aḥmad b. Khālid al-Wahbī > Muḥammad b. Isḥāq > al-Zuhrī > ʿAṭāʾ b. Yazīd > Abū Ayyūb

[Machine] "Al-Witr is a right" so Abu Ayyub mentioned it repeatedly.  

الحاكم:١١٣٣ – فَحَدَّثَنَاهُ أَبُو الْعَبَّاسِ مُحَمَّدُ بْنُ يَعْقُوبَ ثنا مُحَمَّدُ بْنُ خَالِدِ بْنِ خَلِيٍّ ثنا أَحْمَدُ بْنُ خَالِدٍ الْوَهْبِيُّ ثنا مُحَمَّدُ بْنُ إِسْحَاقَ عَنِ الزُّهْرِيِّ عَنْ عَطَاءِ بْنِ يَزِيدَ عَنْ أَبِي أَيُّوبَ قَالَ

«الْوِتْرُ حَقٌّ» فَذَكَرَهُ مَوْقُوفًا عَلَى أَبِي أَيُّوبَ