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

قَوْلُهُ تَعَالَى: {وَلَقَدْ آتَيْنَاكَ سَبْعًا مِنَ الْمَثَانِي} [الحجر: 87]

nasai-kubra:11212 – ʿAlī b. Ḥujr > Sharīk > Abū Isḥāq > Aḥmad b. Sulaymān > ʿUbaydullāh b. Mūsá > Isrāʾīl > Abū Isḥāq > Saʿīd b. Jubayr

[Machine] "In His saying, 'And indeed, We have bestowed upon you seven of the repeatedly recited [verses] and the great Qur'an' (Surah Al-Hijr, 15:87), it is stated by Al-Baqarah, Al-Imran, An-Nisa, Al-A'raf, Al-An'am, and Al-Ma'idah [chapters of the Qur'an]. It has been said, 'The seven long ones share resemblance.'"  

الكبرى للنسائي:١١٢١٢ – أَخْبَرَنَا عَلِيُّ بْنُ حُجْرٍ أَخْبَرَنَا شَرِيكٌ عَنْ أَبِي إِسْحَاقَ وَأَخْبَرَنَا أَحْمَدُ بْنُ سُلَيْمَانَ حَدَّثَنَا عُبَيْدُ اللهِ بْنُ مُوسَى عَنْ إِسْرَائِيلَ عَنْ أَبِي إِسْحَاقَ عَنْ سَعِيدِ بْنِ جُبَيْرٍ عَنِ ابْنِ عَبَّاسٍ

فِي قَوْلِهِ {وَلَقَدْ آتَيْنَاكَ سَبْعًا مِنَ الْمَثَانِي وَالْقُرْآنَ الْعَظِيمَ} [الحجر 87] قَالَ الْبَقَرَةُ وَآلُ عِمْرَانَ وَالنِّسَاءُ وَالْأَعْرَافُ وَالْأَنْعَامُ وَالْمَائِدَةُ قَالَ شَرِيكٌ السَّبْعُ الطُّوَلِ  

See similar narrations below:

Collected by Nasāʾī, Nasāʾī's Kubrá
nasai:916 – ʿAlī b. Ḥujr > Sharīk > Abū Isḥāq > Saʿīd b. Jubayr

Concerning the words of Allah, the Mighty and Sublime: "Seven of Al-Mathani (seven repeatedly-recited): "The seven long ones."  

النسائي:٩١٦ – أَخْبَرَنَا عَلِيُّ بْنُ حُجْرٍ قَالَ حَدَّثَنَا شَرِيكٌ عَنْ أَبِي إِسْحَاقَ عَنْ سَعِيدِ بْنِ جُبَيْرٍ عَنِ ابْنِ عَبَّاسٍ

فِي قَوْلِهِ ﷻ { سَبْعًا مِنَ الْمَثَانِي } قَالَ السَّبْعُ الطُّوَلُ  

nasai-kubra:990 – ʿAlī b. Ḥujr al-Marwazī > Sharīk > Abū Isḥāq > Saʿīd b. Jubayr

Concerning the words of Allah, the Mighty and Sublime: "Seven of Al-Mathani (seven repeatedly-recited): "The seven long ones." (Using translation from Nasāʾī 916)  

الكبرى للنسائي:٩٩٠ – أَخْبَرَنَا عَلِيُّ بْنُ حُجْرٍ الْمَرْوَزِيُّ قَالَ أَخْبَرَنَا شَرِيكٌ عَنْ أَبِي إِسْحَاقَ عَنْ سَعِيدِ بْنِ جُبَيْرٍ عَنِ ابْنِ عَبَّاسٍ

فِي قَوْلِهِ سَبْعًا مِنَ الْمَثَانِي قَالَ «السَّبْعُ الطُّوَلُ»