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
muslim:1952c – [Chain 1] Muḥammad b. al-Muthanná > Ibn Abū ʿAdī [Chain 2] Ibn Bashhār > Muḥammad b. Jaʿfar > Shuʿbah > Abū Yaʿfūr Bihadhā al-Isnād

This hadith is narrated on the authority of Abu Ya'fur with the same chain of transmitters, and he mentioned seven expeditions.  

مسلم:١٩٥٢c – وَحَدَّثَنَاهُ مُحَمَّدُ بْنُ الْمُثَنَّى حَدَّثَنَا ابْنُ أَبِي عَدِيٍّ ح وَحَدَّثَنَا ابْنُ بَشَّارٍ عَنْ مُحَمَّدِ بْنِ جَعْفَرٍ كِلاَهُمَا عَنْ شُعْبَةَ عَنْ أَبِي يَعْفُورٍ بِهَذَا الإِسْنَادِ

وَقَالَ سَبْعَ غَزَوَاتٍ  

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»