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
ahmad:11115 – Yaḥyá b. Isḥāq > Ibn Lahīʿah > al-Ḥārith b. Yazīd > Abū al-Haytham > Abū Saʿīd al-Khudrī > Bāt Qatādah b. al-Nuʿmān Yaqraʾ al-Layl Kullah b Qul > Allāh Aḥad Fadhukir Dhalik Lilnnabī ﷺ

[Machine] Qatadah bin Numan used to recite the whole night by saying "Say: He is Allah, the One." When this was mentioned to the Prophet ﷺ, he said, "By the One in Whose hand is my soul, he has surpassed half of the Quran or a third of it."  

أحمد:١١١١٥ – حَدَّثَنَا يَحْيَى بْنُ إِسْحَاقَ أَخْبَرَنَا ابْنُ لَهِيعَةَ عَنِ الْحَارِثِ بْنِ يَزِيدَ عَنْ أَبِي الْهَيْثَمِ عَنْ أَبِي سَعِيدٍ الْخُدْرِيِّ قَالَ

بَاتَ قَتَادَةُ بْنُ النُّعْمَانِ يَقْرَأُ اللَّيْلَ كُلَّهُ بِ قُلْ هُوَ اللهُ أَحَدٌ فَذُكِرَ ذَلِكَ لِلنَّبِيِّ ﷺ فَقَالَ النَّبِيُّ عَلَيْهِ السَّلَامُ وَالَّذِي نَفْسِي بِيَدِهِ لَتَعْدِلُ نِصْفَ الْقُرْآنِ أَوْ ثُلُثَهُ